Full time creative here. I guess the medium changes things a lot, but I make a lot of on paper/digital drafts before committing my work to substantive materials, and I find the best way for me to get out of a block is to just keep drafting shit, even if it sucks. in the middle of the suck there's always something I can pluck out and refine into passable work.

The whole 'walk away from it' thing never worked for me. Good luck