That is the hardest part - just making the decision and doing it. For me, it seems like the first couple of weeks are pretty rough. Then I'm fine and committed for a long time, until I get pretty close to my goal and get lazy. But that is AWESOME that you do zumba 3 days a week. That is more than me! I can diet and all that but I HATE to exercise. Even having buddies to go with and a gym that is open 24 hours a day 3 minutes from my house doesn't motivate me!!!
I think rewarding yourself for small achievements is important, too. I bought myself a new purse the other day. I deserved it.
Who doesn't put on weight during the holidays? You most definitely CAN do this - you just have to get started and stick with it! Don't let some extra holiday pounds discourage you. Get your eye on the prize and get after it.
So you have an April baby, too? Mine will be 1 in April.