the best thing to do for yourself is to choose projects based on the time that you do have. If you overwhelm yourself with projects, you end up falling behind on a lot and that can discourage you. the aim is to succeed and part of succeeding is to avoid doing more than you can handle.
I can relate with that. Most times I work all through the day and lose track of the time. When I eventually look at the time I would be like 'woah why's the time flying so fast?'