Benefits of quitting cannabis

I am male, age 31, and I live in the Lincolnshire, UK.  I am unemployed and the way I am going this will not change anytime soon.  Eventually I will be unemployable in all but the most menial of jobs.  After ten years of smoking, and at least seven years of knowing it was causing me a problem, I have finally come to accept the truth.

My name is James, and I am a drug addict.  If this does not change I will never have a decent life, I will never know happiness and success, and eventually it will kill me.