Being confident about your abilities can improve performance. Optimism can also help to improve and extend your life.
Get enough sleep
In two weeks time, getting only six hours of sleep a night causes the same brain impairment as being awake for 24 hours straight. Being awake for 24 hours straight is the cognitive equivalent of being legally drunk.
No matter how small your task or challenge, overcoming it creates the same euphoric feelings as large eventful successes. If you want to get the most out of that euphoria, celebrate your positive experience for at least 15 seconds, it will become more ingrained in your psyche, and will have a tendency to over ride all the small negative feeling you have experienced during the day.
If you are having a particularly difficult day, take a moment to think about something that recently made you laugh. Not a yuk, yuk chuckle but a big belly laugh. Dwell on it for a moment, it will give you a break. Try and place yourself in the company of friends, or family, they are certain to remind you of theirs and your humanity. Chill out and laugh.
Know when to stop
Victory has a moment of great peril. Arrogance and overconfidence can push you past your goal and send you into injury. There is a reason you spend so much time planning and strategizing, allowing a small success to go to your head could be disastrous. Set your goal, and when you achieve it stop. Let your reevaluation take place, after the moment, when you’re feeling a little less cocky.