Some times I just force myself to work and have a an "argument" with whatever medium I am working with. It usually doesn't turn out to be anything I would consider good, but I learn how to communicate with the medium again and that seems to break whatever seems to be holding me back and causing the block...just my two cents...I hope you can find your way back!

Browse past posts in this group for a creativity boost.

Organize your stuff. I always find something I forgot about and want to play with. I also used to find something boring, or wrong for everything I got and add it into the next work. Sort of the sows ear and silk purse concept.

Try some physical exercise. Walk in a park, woods or city (architecture).
Stop thinking about it.
Do some maintenance, sort materials, clean tools, seek out materials.
Post some of your stuff here.

I am also a mixed media artist...I find that if I go through a creative magazine (my favorite is Upper Case), it inspires me to play and that leads to ideas that then start flowing to the point that I have to choose what I want to do...sometimes I will just rummage through some of my supplies, organizing them...something will stop me in my tracks and I have to make something with it (last night, I got an idea from a little figure from my parents old cuckoo clock!)...just start with no end planned...welcome and good luck...share some of your past work...this group is kind and supportive and might inspire you to do more to show!