Console those who lose. Celebrate those who win. Everyone who is talented doesn't always win. Nobody who ever gave his best regretted it. You are only as good as you make yourself.
People never improve unless they look to some standard or example higher or better than themselves.
The higher the level of play, the less they accept excuses. Col. McDonald Valentine Purpose does what it must, talent does what it can. We're never too old to learn new skills and polish the ones we have, to grow in strength and to increase our speed and endurance at any age is satisfying. Too many people take only their wants into consideration never their talents and abilities. To improve mental game, simply think about it.