First, exercise! Only with good body and spirit can we have the energy to do other things. Start running every morning and do some aerobic exercise to improve your physical fitness first.
Second, study. Think about what job you want to find after graduation, or what kind of job you want to find, and read the corresponding books in a targeted way, which will be of great help to your future work. If you don't want to work for the time being, you can consider whether you want to take the postgraduate entrance examination. If you want to take the exam, then determine your major and school, and go for it!
Finally, reflect. Think about why you are decadent, reflect on yourself and avoid repeating the same mistakes in the future. And make a short-term plan for yourself, do things strictly according to the plan, exercise your willpower, determine your ideal, and work hard for it and move forward step by step.