Dear Mike,
Thank for your letter.
Please don't worry to much, here are some exprience I would like to share with you. Firstly, diet. Choose those food which are good for your health and make you happy. Secondly, Mentality. Look the bright side on everything you face. Thirdly, Relax. You should learn how to relax appropriately. Finally, Seeking Help. Try to turn to the people you trust, discuss the problem you had.
I hope those 4 suggustions may help you.
Yours,
Li Hua