Yep, a fairly well-known technique, albeit with a different implementation.

I would be more intrigued, though, to learn how to discipline your mind to do a task when it needs to be done (right now or at some later specific time). It seems that would take a lot more mental fortitude.

Example: I should get gas in my car on the way home from work. I don't need to, but it would help. A few hours later.. eh, I'm hungry, I'll get gas in the morning. Next day, late for work because I had to get gas. How do I discipline my mind to get gas when I should have? Silly example, but it's what came to mind first.