Hey Murandmom -
I'm so glad you found the site! A positive attitude is ALWAYS a good thing - makes it easier to stick to your plan. You just need to translate it into making GOOD choices, not excusing bad ones...for instance, the next time you make yourself a healthy meal or get some exercise, put that positivity to work! Tell yourself, "Wow! I feel so great having made this choice, and I am so proud of myself!". That way, you're reinforcing the positive behaviors.
I'm a pretty positive chick myself, and that approach has REALLY helped me - just turning that positivity into a way to reinforce my good choices so they become good HABITS.
Can't wait to see you around more soon and get to know you!