Time management is not just about how you deal with work and school, it is how you use the 24 hours given to you each day. To properly manage your time, you need to understand what is worth your time.
I have a feeling there’s a lot of excessive guilt going around during this time, so I encourage you to take care of yourself and take care of your friends. We all have made countless mistakes, but we'll always have an “afterward” to act on.