There are no excuses. If you have done something wrong, own up to it. If you have lied, fix it. If you have pretended to be other than you truly are, come clean. If you have been in denial, face the truth. If you have been steeped in blame, regret, or resentment stop it. Life has a funny way of making you responsible if you do not become responsible on your own.
Learn from your mistakes. Become fully responsible for yourself and life will give you perfect responsibility in return, responsibilities that will aid you on your journey of change. Taking responsibility for all that you consider wrong in your life is the first step in a new direction. But keep in mind that to take full responsibility means there are no excuses.