Stop complaining and start appreciating. Stop feeling sorry for yourself and start seeing all your blessings. Stop crying and start laughing. Stop being negative and start being positive. Stop the bad and sad thoughts and start the good and happy thoughts. 
You are the only one who can change how you think and act, and react. No one else is responsible for you, but you. 
How responsible are you, for you? Is it in a good way or the wrong way? Only you can answer for you!