Good luck.
Its difficult to break habits. You have a goal, but what is your plan for achieving that goal? Will you be able to follow that plan? Will you be flexible enough to change the plan when required? Don't get my wrong, i'm not trying to discourage you. But for me the hardest part for me was finding a plan I was willing to do and not become disappointed when things didn't work out as planned.
Best of luck to you.