Not worry about a ‘before 30 checklist’. Only adds pressure and unrealistic expectations.
Start an emergency fund. Get out of debt. Develop a sustainable exercise program. Learn to say NO.
Travel around. Do that before house/wife/kids.
See a therapist – start resolving any past, childhood traumas or issues. When you hit 30 (or get older generally), those issues can make you spiral.
Move out of your parent’s house.