When I return to the task, I get up to speed in ~10 minutes, and things way go smoother because a) I'll be rested, b) My brain would have processed the plan and came up with a refined version of it. When I read the plan I wrote, I automatically recall the refined version most of the time.
Then, I get to work and finish what I have started.
Interestingly, sleep doesn't erase my emotions, but pause them. I just continue from where I left.