Ask HN: How to avoid getting overwhelmed when starting to build new things?

I'm beginning to avoid starting new projects because of the sheer effort and pain I know it takes to build and debug things to the point where they're usable and can be improved. The more I progress in my career, the worse it becomes (a bit like PTSD). In many ways, not knowing was great as I'd approach thing without regard or knowledge of the suffering needed to get things working. Do you chaps have any tips on not getting overwhelmed in this regard?