New Years Challenge

I lost alot of weight in 2009. I also gained about 10 lbs back from November to January(1/2 of that was Christmas week)... Thankfully in the last 2 weeks I've re-lost what I gained and now I'm trying to lose more. The holidays were too 'holiday'...they always are. I was around too many cookies and I made too many cookies and ate too many cookies..
So now I'm ready to finish my whole weight loss journey. And I want to be done in 2010.

I have really good motivation for the next three months:

I am participating in two weight loss challenges(at the same time).
New Years Eve two of my sisters,Becky and Rachel, my mom and myself weighed in. We each put in $10 and the winner will win the whole amount. We have until April 1st to lose weight and the one with the heighest % of weight loss wins $30.
It's been 2 weeks now and I've lost 11 lbs (5%).
I really want to lose 10 pounds a month. . That would mean 13% weight loss. More would be good -- but I don't think it's realistic to lose more than 2 lbs a week.

The other challenge is with some girls I work with.
20 girls that I work with have a weight loss challenge. It goes until April 2nd. Some girls seem really dedicated (some don't). I'm trying hard to be one of the dedicated girls.
The winner gets about 250? Not sure of the amounts. We all put in $20 and the top 3 losers will win. The one that loses the most % of body weight will win the most. I want to be in the top 3%.

I think I'm on track...I struggled the first 8-10 days but I've was able to overcome the evening snack I've been ok. My biggest challenge is to eat my dinner at a reasonable time and not eat to again. When I exercise alot(days that I have a 1 1/2-2 hour bike ride) my appetite is controlled. I seem hungrier on the days that I'm less active(and more so in the evening). When I exercise I deffionately feel less hunger but, I also think it's psycological. I don't want to work out hard and ruin it by eatting the calories that I just burned. All that sweat, soreness and time would be waisted on an extra snack...