Take responsibility for your life.
You are responsible for everything in your life - from the successes and happiness to the failures and sadness. It is up to you to interpret any situation you are in and determine how you are going to act on it. If you refrain from taking responsibility, your life will spiral out of your control. However, if you understand that you are 100% responsible for your life, and begin acting on the situations you wish to change, you will notice your quality of life getting better.