Start slowly. Pick a few things to really concentrate on at first and really get them to be a habit. Then add more. It may take more time, but you'll be less likely to give up.
I think it's great that you've decided to use the message boards. The place is full of people who are in the same boat and also people who have been through it and succeeded. Both types of people are very valuable to have around!
You can do this. Never give up. Ask questions, give and seek support, and let us know how your journey goes!