As someone else suggested here recently, I would start with a very, very small step: finding something that has even a little bit of interest to you, then investigating it, finding out more things about it, work on it, make some things if it is something like a hobby that you can actually do some physical work with. Very small things to begin with, build on that, do not think about all the difficulties that are going to happen, concentrate on one thing that you are interested in, take a step at a time, give yourself some successes. Build step by step.