When I was a competitive judo player, one of my coaches told me that there are two types of fighters: those that train/fight to win and those that train/fight to not lose. Although the goal is the same, the mindset between these two fighters is completely different.
The fighter that trains and fights to win is not afraid of failure. They are not afraid to try new techniques and are always looking to refine their own style in training. Many times you will see them fail by missing techniques, getting countered and/or by completely gassing themselves out from repeated attempts. During their training and fights, they almost never think about what will happen if their techniques are countered. Consequently, they are always the more aggressive athlete and constantly on the offensive.
At the dojo (home gym) and local level, the athletes that trained to not lose generally did very well; better than their counterparts. But as time went on, and stakes grew higher at national and international competitions, the athletes that initially met failure, the ones that were not afraid to fail, learn, refine and try again became more successful than their counterparts that did so well in practice and at local competitions.
The athletes that train to win and are not afraid to fail along the way will always do better in the long run than those that "play it safe" and never push themselves to the point of failure. The athlete that is unafraid to fail will do so in their efforts, but will learn from that failure and ultimately refine themselves, and their mentality is always healthier and more positive than those that are afraid of failure.
Do not be easily impressed by people that are always "crushing it", especially with things they are good at, and take a closer look at those that are consistently struggling yet always show up. Figure out how you want to train. Do you want to play it safe and look good all the time for your peers? Or will you attack your weaknesses, embrace discomfort and failure and ultimately end up achieving things you never imagined you could?
Train to win, do not train to not lose.