Put your mental, emotional, physical and spiritual health first. Once these areas are gone, there is usually no way back. Even doctors can't fix a destroyed system.
The 5 simple rules for a healthy life:
1. Get enough sleep. No 3-4 hours are not sufficient.
2. Walk daily 30 minutes - at least
3. Mind your nutrition. You are what you eat. Fast Food is garbage.
4. Whether legal or illegal drugs destroy health - alcohol, marijuana and everything else = garbage.
5. Mind your relationships. Start on a high note and foster those that reciprocate. Let go of the rest.
This is every persons own responsiblity. Nobody will tell to do it.