Yaye! I am the same way, I tend to be a tomorrow person and have been trying to re-focus and be a "today" person.
I also tend to think that if I mess up, oh well today is blown we'll start again tomorrow. But my husband has been gently reminding me that instead of tomorrow, why not now? The next bite that goes in my mouth will be better for me than the last was if I messed up.
I am totally with you in making today pledges!
Today I will pack at least 4 boxes.
Today I will drink at least 3 bottles of water.
Today I will do the dishes!
And tomorrow, we'll worry about that then.