Maybe I missed it in the thread, but are you male or female? It helps to tailor the advice I offer.
For now I will offer the neutral version that applies to either. You might not be saving as much money but it is a commitment to building a better self. Sorry if this seems preachy.
First, join a gym and exercise every day. Humans are an endurance animal so don’t do it just for strength. It releases endorphins and you will feel better and more energetic. One thing most CEOs have in common is they wake up early and exercise. You will feel good about your physical gains and that feeling is important.
First and a half (it’s the other part of the diet/exercise connection), get a diet plan and stick to it. There is a ton of research on feeling better from a better diet. Plan what you eat. Drink only water. My oldest does all his planning and meal preps on Wednesday and Sunday nights, packages it up into meal-size portions and knows exactly what he is eating each day.
Second, go dark on the internet for six months. It wastes time and does not make people happier. Delete all social media accounts. Keep email but check it only twice a day on a schedule. No tv, no internet unless you are going to finish your classes. Turn off all electronics at least an hour before bedtime, and make your bedtime so that you get at least 8 hours of sleep.
Third, think seriously about getting out of your parents’ house and make it a goal. For whatever reason, it does not seem to be working for you. You are self-sabotaging your academics. Moving to your sister and establishing residency seems like the most reasonable choice. A change of setting can help a change of character.
Fourth, break out the library card and commit to a personal growth phase. Read self-help books. Read about organizational skills. Read philosophy. If you like languages, join Duo Lingo and work on that 10 minutes a day. Finishing a book is a positive step, as is learning something interesting or gaining a skill. Each positive step is a slightly better you.
Fifth, surround yourself with the types of people you aspire to be. You are an excellent writer and are committed to making the change. Learn by osmosis and mimicry. Allow them to mentor.
A note about healthcare: under ACA every medical plan must offer one no-cost physical per year. There will be some charges for blood tests. Establish with an office in case you get sick or injured and need it.
We’re all pulling for you @chileb . Tune up that good intellect and turn it into good performance. You’ve got this.