Follow your interests. Decide the job you want and then become the person that does that job.
Don't think about the things you need to get started or why it may not work. Do what you can with what you have. It's really easy to spend time thinking about what is not going right or how you may not be where you want to be. Keep going. Patience is a big part of it. You have to realize it's going to be a long trip. When things get tangled up, and you feel like you can't do anything, don't blow a fuse. It's all part of the process. You have to trust in the process and keep moving forward. The process is the work, and as long as you keep doing the work, things will begin to untangle. However, that doesn't mean you'll ever feel satisfied. That's part of it too. That anxiety and discontentment are the things that keep you moving forward. The work never ends. Once in a while, it's worth looking back. But not too often. Just keep moving forward.