Try and find out the source of the problem. Dig deep inside of you and find out exactly what is bothering you. There might be certain things that you expect from yourself, things that you cannot fulfill due to your line of work or your hectic routine.
Make sure you get to the bottom of your problem because remember if you do not keep a clear head then everything will bother you at some point of time.
Do not let things get to your head. Keep a composed and calm attitude in high pressure situations. Do not let things aggravate you and get the best out of you because you are better than that. There will be times when your patience will be tested. Stay intact with your feelings and you will soon realize that you have complete control over yourself and your emotions.
Physical exercise helps tremendously. You not only keep your body fit but also your mind. And the way to a healthy body is a healthy mind. Do not lose sight of your goal. Be the person that you are. Do not let people or situations get the better of you. Be patient with yourself and give yourself some breathing space.
Try meditation. It gives you ample time to concentrate and explore your world.