I experienced the same type of thing around your age. I always thought of it as a youthful, mid-life crisis. You sound like you know what you need to do. You're young and have a long life ahead, focus on what you can do now for your future, and don't compare your life with a schedule in your or someone else's head as to where you should be. We're all different and unique. Some accomplish a lot early, some do it later in life. Some may be happy not accomplishing a lot. That's all okay. Take Care