According to Gautama Buddha, "We are what we think. All that we are arises with our thoughts. With our thoughts we make the world. If a man speaks or acts with an evil thought, pain follows him. If a man speaks or acts with a pure thought, happiness follows him, like a shadow that never leaves him."
...so cast away the negative thoughts and don't make yourself miserable. For a change, try not to complain; try not to be angry; try to see the positive in all circumstances; try to be happy for others' success and most importantly, don't wish ill on anyone. Be careful, what you wished for might happen to you.
"Count your blessings and your problems. If the problems outnumber the blessings, count again. Chances are, the things you take for granted are not added."