i'm actually feeling the same as you. I'm now trying not to avoid these things, because I find them somewhat counterproductive. Sometimes, committing to the choice makes you go further in the songwriting/production because you only think ahead. So I don't agree on what you say, I don't think it's dangerous or useless, it's just plain natural.
I sort of try to accept something is not 100% perfect and move on. I decided that when I realized I spend 20% of the time creating 80% of the material, and the other 80% of time to do the 20% polishing
Well, don't know the numbers but you get the idea.