Our preferences are often different based on when we are. If we are now, maybe we feel like taking a nap. If we are looking to the future, maybe we'll do some hard work then. If we are looking to our future selves looking back to now, maybe we don't want us to to take a nap, but do the hard work instead!
Hard work often pays off later, but laziness always pays off now!
The trap of putting things off to the future, is that the future becomes the present. And the future present you, is infinitesimally different from the present present you. If the present present you is putting things off until the future present you, what stops the future present you from putting things off to the future future you!?
This is a good plan for life in general.
If you have two choices, choose the harder.
If you're trying to decide whether to go out running or
sit home and watch TV, go running.
Probably the reason this trick works so well is that
when you have two choices and one is harder, the
only reason you're even considering the other is laziness.
You know in the back of your mind what's the right thing
to do, and this trick merely forces you to acknowledge it.