I'm currently doing this, and it's having very tangible effects. One other thing I've noticed is that a little of mandatory yet unrewarding activity [1] profoundly affected my feelings, behavior and motivation. I became speedy, and time passed a lot slower [2] as opposed to when I have no obligations and everything starts to melt away.

[1] I had to work part time as a clerk at a store, it was insufferably dumb, but I left thanking them

[2] in the good kind of way, ability to be focused and do more and yet it has only been 5 minutes.