Ask HN: How do you manage your one-man project?

I am doing some side projects at my "copious" spare time (getting up at 5am and work for 2 hours). I think it would be a shame if I end up wasting time. So, I wonder if any of you, in your one-man project, use any software development methodologies (scrum)? Any project management software (evernote)? Or do you relax and not keep track of it at all?