Thoughts about how to keep motivated

I'm thinking about getting a little calander for myself along with shiney star stickers, and each day I will give my self stickers for the following

Drinking all my water
Exercising
Eating the right amount of calories
Fully filling out my food and exercise diary.

So I have the option to get 4 stickers a day, and at the end of the pay period, if I have all four sticketrs EVERY day, I get some sort of treat, new socks, hair ribbon.. something like that...

What do you think?