Here is a skeptical reply to Baumeister on willpower:

This idea has a visceral, compelling feel to it - it does feel like I'm tired and drained after making decisions - and the idea has received a tremendous amount of attention from scientific and lay communities alike, perhaps partially explaining the duo of scientist/journalist on the dust jacket.

There are a number of problems with the model, and in this post, I'll talk about one of them: the model has been falsified a number of times, including by research performed in the lab of the proponents of the model.

Note that one's perception of cognitive resource depletion matters.