Attention and willpower

Nicklas Lundblad writes about using your limited attention efficiently, but also suggests that there may in fact be another economy underlying the attention economy, namely an economy of will, or willpower. There are reasons to believe that willpower is also a limited resource that you can save and spend.

Assuming this is all correct, I guess we have to make trade-offs like: should I save some willpower now by falling for the temptation to watch TV, so I can use it later to go to the gym?

Not to mention that we will be spending both willpower and attention thinking about how to spend our willpower and attention…