We can define mental strength by identifying the things mentally strong individuals don’t do. 
1.    Waste Time Feeling Sorry for Themselves. You don’t see mentally strong people feeling sorry for their circumstances or dwelling on the way they’ve been mistreated. They have learned to take responsibility for their actions and outcomes, and they have an inherent understanding of the fact that frequently life is not fair. They are able to emerge from trying circumstances with self-awareness and gratitude for the lessons learned. When a situation turns out badly, they respond with phrases such as “Oh, well.” Or perhaps simply, “Next!”
2. Give Away Their Power. Mentally strong people avoid giving others the power to make them feel inferior or bad. They understand they are in control of their actions and emotions. They know their strength is in their ability to manage the way they respond.
3.    Shy Away from Change. Mentally strong people embrace change and they welcome challenge. Their biggest “fear,” if they have one, is not of the unknown, but of becoming complacent and stagnant. An environment of change and even uncertainty can energize a mentally strong person and bring out their best.
4. Waste Energy on Things They Can’t Control. Mentally strong people don’t complain (much) about bad traffic, lost luggage, or especially about other people, as they recognize that all of these factors are generally beyond their control. In a bad situation, they recognize that the one thing they can always control is their own response and attitude, and they use these attributes well.
5. Worry About Pleasing Others. Know any people pleasers? Or, conversely, people who go out of their way to dis-please others as a way of reinforcing an image of strength? Neither position is a good one. A mentally strong person strives to be kind and fair and to please others where appropriate, but is unafraid to speak up. They are able to withstand the possibility that someone will get upset and will navigate the situation, wherever possible, with grace.
6. Fear Taking Calculated Risks. A mentally strong person is willing to take calculated risks. This is a different thing entirely than jumping headlong into foolish risks. But with mental strength, an individual can weigh the risks and benefits thoroughly, and will fully assess the potential downsides and even the worst-case scenarios before they take action.
Image result for mentally strong image7. Dwell on the Past. There is strength in acknowledging the past and especially in acknowledging the things learned from past experiences—but a mentally strong person is able to avoid miring their mental energy in past disappointments or in fantasies of the “glory days” gone by. They invest the majority of their energy in creating an optimal present and future.
8. Make the Same Mistakes Over and Over. We all know the definition of insanity, right? It’s when we take the same actions again and again while hoping for a different and better outcome than we’ve gotten before. A mentally strong person accepts full responsibility for past behavior and is willing to learn from mistakes. Research shows that the ability to be self-reflective in an accurate and productive way is one of the greatest strengths of spectacularly successful executives and entrepreneurs.
9. Resent Other People’s Success. It takes strength of character to feel genuine joy and excitement for other people’s success. Mentally strong people have this ability. They don’t become jealous or resentful when others succeed (although they may take close notes on what the individual did well). They are willing to work hard for their own chances at success, without relying on shortcuts.
10. Give Up After Failure. Every failure is a chance to improve. Even the greatest entrepreneurs are willing to admit that their early efforts invariably brought many failures. Mentally strong people are willing to fail again and again, if necessary, as long as the learning experience from every “failure” can bring them closer to their ultimate goals.
11. Fear Alone Time. Mentally strong people enjoy and even treasure the time they spend alone. They use their downtime to reflect, to plan, and to be productive. Most importantly, they don’t depend on others to shore up their happiness and moods. They can be happy with others, and they can also be happy alone.
12. Feel the World Owes Them Anything. Particularly in the current economy, executives and employees at every level are gaining the realization that the world does not owe them a salary, a benefits package and a comfortable life, regardless of their preparation and schooling. Mentally strong people enter the world prepared to work and succeed on their merits, at every stage of the game.
13. Expect Immediate Results. Whether it’s a workout plan, a nutritional regimen, or starting a business, mentally strong people are “in it for the long haul”. They know better than to expect immediate results. They apply their energy and time in measured doses and they celebrate each milestone and increment of success on the way. They have “staying power.” And they understand that genuine changes take time. Do you have mental strength? Are there elements on this list you need more of? With thanks to Amy Morin, I would like to reinforce my own abilities further in each of these areas today. How about you?
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What Mentally Strong Do

Just like people aren’t born with physical strength, no one is blessed with incredible mental strength at birth. Instead, mental strength is developed over time by individuals who choose to make personal development a priority.
In addition to avoiding the things that could hold them back, mentally strong people create healthy habits that assist them in growing stronger. Here are eight things mentally strong people do every day to strengthen their mental muscles:
1. They Use their Mental Energy Wisely
It’s easy to get distracted throughout the day by a variety of unimportant and unproductive tasks. Mentally strong people choose to use their time and energy carefully. They devote their efforts to the things that matter most so they can accomplish their goals.
2. They Reframe Their Negative Thoughts
Everyone has negative thoughts sometimes, but mentally strong people don’t let those thoughts hold them back or drag them down. Instead, they respond to their pessimistic predictions and harsh criticisms with a more productive inner dialogue. They stay motivated to do their best by talking to themselves like a trusted friend or a helpful coach.
3. They Work Toward Established Goals
Mentally strong people establish clear personal and professional goals that give them meaning and purpose. They forgo immediate gratification by keeping their long-term goals in mind. They view obstacles as challenges, rather than roadblocks to their success.
4. They Reflect on Their Progress
Mentally strong people reflect on their progress toward their goals every day. They set aside time to examine what they’re doing well, and they humbly acknowledge areas that need improvement. They hold themselves accountable for mistakes and they constantly strive to grow better.
5. They Tolerate Discomfort for a Greater Purpose
While some people go to great lengths to avoid any type of distress, others endure pain simply to prove they’re tough. Mentally strong people, however, tolerate discomfort when it serves a greater purpose. Whether they’re exercising when they feel tired, or they’re delivering a speech when they feel terrified, they use their pain to become better.
6. They Practice Gratitude
You can’t be at your best if you’re insisting you deserve better. Mentally strong people acknowledge they already have everything they need. They recognize their good fortune and express gratitude for all things big and small.
7. They Balance Emotions with Logic
Mentally strong people know their feelings play a major role in their perceptions and their behavior. They pay close attention to the ways their emotions could influence their judgement. They carefully balance their emotions with logic so they can make the best possible decisions.
8. They Live According to their Values
Although it may be tempting to measure your self-worth by comparing yourself to your competition, mentally strong people don’t fall prey to such distractions. They focus on living according to their values and doing their best, despite their circumstances. At the end of the day they don’t ask themselves, “Did I beat everyone else?” Instead, they ask, “Did I stay true to my values?”

Amy Morin is a psychotherapist, keynote speaker and the author of 13 Things Mentally Strong People Don’t Do, a best-selling book that is being translated into more than 20 languages.