Hey there Ellie, thank you so much for posting, welcome to the forums.
By Despicable Me, do you mean the song, or the soundtrack in general? Or does watching the movie help as well?
It's great to hear that you've found something that helps you out when you're feeling down. Sometimes, all you need is to listen to or do something on repeat because of the familiarity and comfort that it gives you. For me, this takes the form of comfort shows or music.
All the best, SB
