In order to overcome worry i believe you need to know it disadvantages to your health both physically and emotionally. consider this few following points:
Worrying can possibly lead to death.
Anxiety is an outcome of worry as cancer and other deadly diseases are related to it.
Ulcer and headaches are one of the physical ailments accompanied with worry, emotionally you begin to have this feeling or become the followings; doubtful,Discouraged, regrets, envious, ungrateful, depressed.
People who worry suffer from anxiety disorders.
HOW TO STOP WORRYING
Instead of thinking about problems think of solutions
Don't read meanings to things easily.
Don't jump to conclusion fast.
Learn to be Patient with yourself and others.
Learn to tolerates some things.
Be grateful and contented with what you have.