How do I take care if myself properly?
added on to what nerd said, exercise every now and then and stay healthy, keep your metabolism up, stay away from starchy and carbohydrated foods, keep active and dont fall into playing video games constantly. Find hobbies that make you happy and do them, mental health is very impotant to :)
Eat right, exercise regularly, good hygiene, 8 hours of sleep a day, get your vaccines, regular dental checkups, and regular medical exams, and be nice to others.
...and most importantly, maintain a positive outlook on life.
Shower, use deoderant, and comb your hair daily. Brush your teeth 2-3 times a day. Wear clean clothes.