When making my webcomic Understanding Nothing, i tend to put on some Anime/Video Game/Cartoon Soundtracks i like. If I'm really uncomfortable, ill either make myself some baked potatoes and/or have a shower.
I find taking a 15-30 min break playing your favorite game helps too (cough Splatoon 1).
If all fails, i just give up for the day. Try again tomorrow.
Quick Summary: Splatoon and Baked Potatoes. Those ease me.