It's very hard for me to get my butt to draw, since I am so afraid of making mistakes and being not good enough (even though I know that you can edit almost anything digitally afterwards XD)
This has gotten better in the last year or so.
NOW when I sit down to draw, I swear, the minute I start drawing, someone rings/calls/wants something. XD;
(Plus I hate doing social media stuff for my comic, which is probably why it's not too popular...)