It’s short.
The most consistent block I find in my creative work is my self-judgement. I have a hard time objectively assessing the work I create, because all I can see and hear are the flaws.
But I come with good news. The half-life of that self-judgement is so, so short. A few months of space and I find that I’m not longer emotionally hooked when it comes to a creative project. I can listen or look at it and appreciate the good as well as the bad. And better news: the longer I create, the shorter the half-life becomes, because I have learned to trust myself and to be objective sooner.
My own solution for this is to have enough projects cooking that I can set one aside if it’s too radioactive, and let it dissipate until I can really take it in. That way, I can always be creating and never obsessing or fighting against that self-judgement.