Sometimes you stop in life and think that you can't do something. But actually, you can. Trust that. Go for it. It's worth it. Do what you need to. It's worth it in the end. As I aim for that Senior Developer position
One of the keys to success is passion. If you care about something or want it naturally you won't need to force yourself to work on it. The passion will be your fuel. Only work on things you are passionate about.