Lee Nathan writes over at the Beeminder Blog,

We need to treat our future selves better. We need to create contracts with our future selves so that we can both be happy. One way of doing this is by setting goals. A goal is a way of saying, this is who I want my future self to be. The problem is that usually we leave it up to our future selves to figure out how to do it. We procrastinate. The future self is an abstract concept that the monkey self doesn’t understand or care about. The modern human, however, has to be more evolved and overcome the akrasia created by our monkey selves.