A couple of years back my nephew was in college, and couldn't make tuition, and I took a loan off my retirement account to help him out.
The way the loan was set up, the repayments came out of my paycheck, so I wouldn't even notice them. I kind of forgot about them, except when I changed jobs, and had to start paying them manually, by check.
I worked out how to set up a direct deposit repayment thing and proceeded to forget about it again.
I don't have to remember it ever again, because on Tuesday I got an email that it was all paid back.
Man, that feels good.