Things that I do to prevent creative blocks:
-activities to let my brain take a rest / switch off my brain:
sport, going on a walk, gym etc. is perfect for that.
-new inspiration (music, comics, tv, observing people, talking
to people, reading)
-creative regular habits. I start to write, draw, play guitar, sing etc. and
then the inspiration comes and not the other way around. I have instruments,
notebooks and sketchbooks everywhere and I just do it.
-allowing myself multiple creative projects I can switch to.
I write 50 songs every year, stories, comics, characters, illustrations,
ideas for lessons (I teach kids how to draw)
-allowing myself to trash ideas or projects. 5 of the 50 songs get finished.
Sometimes 12 and I have an album.
The more you do it, the more ideas you will have, that´s how the brain works