Has anyone been very suicidal and gotten better?

between the age of 15 and 25 I was super depressed and suicidal. unfortunately, most of what helped is what you refer to as "basic shit". these are the things I do to stay healthy mentally and if I don't follow these rules i start going back to feeling horrible: I never eat sugar more than once a week. i never go more than 2-3 days without exercising. I got rid of all the toxic people in my life.I meditate in order to maintain a contact with the part of me which is always fine and whole so that i don't need anyone or anything to be happy. when I spot certain signs I take magnesium. I try to always eat at the right time and never go too long without eating, if for 2-3 days I wait too long in between meals (more than 5-6 hours) I get depressed and it takes a few days to get back to normal. I also take psylocybin mushrooms at least once a year to remember the beauty of everything. I actually discovered the anti-depressant properties of shroom about 20 years before mainsteam science.
now if by my fault I don't follow these rules and I fall into a whole I have signs I notice that tell me that I am having a phase of depression, when i notice these signs I completely avoid analysing my life and making conclusions about it. once I self-diagnose as being in "a phase" I consider my brain to be out of order and I perceive all the negative, depressive thoughts as emotional halucinations. I actually define depression as an emotional halucination, so when I diagnose it on myself I know that I can't trust how I feel. after that I avoid thinking too much, I get back to the rules written above and I go back to normal in a few days.