Ah man, this sounds exactly how I am feeling all the time too! Good insight :)
I find that this idea of not having enough time to master a certain topic or skill is actually keeping me from starting certain projects at all. Which can be a bit depressing.
What I try to do is break things down into such small pieces that each of them are doable. After a while of doing these smaller chunks got me where I initially wanted to be.
Hey michelmake, thanks for your input. Yes, that's what I found to: That slicing up a skill or project into smaller doable and more overseeable slices helps a lot. Moving slice by slice until the whole is completed. What helped me most and still helps me most so far with this pattern is to over and over again remind me to let go of perfectionism and trying to be perfect in what I am doing or about to do, and instead shift the focus to: I am going to become better as I go and learn in the process, but not strive for perfection itself. Perfection is kind of this airy fairy term and concept anyways inside our minds I find. It doesn't really hold a substance or isn't really a tangible concept to begin with, I find inside myself.