What Should I Prioritize?

I'm pretty in the bug these days. I'm always bothered of what things should I do for the mean time. I always have plenty of things to do. I need to do this, I need to do that. Yet... This is giving me a hard time. I don't even enjoy things anymore since that I was bothered of those things to do. So for me to enjoy things again, I just need to choose what things to prioritize. With this prioritization, I must apply self-discipline to do things which are really important and be not bothered by things which ruin the focus of doing the certain thing.