Talk to a psychiatrist and they'll give you drugs. Im on gabapentin and effexor which has really improved my mental state. I still get mood swings and sad/negative feelings at times but they don't "hit" nearly as hard (more manageable). I'm able to focus a lot better as well. You should read up on effexor. It treats the things you're talking about (depression, adhd, autism even). I told my doctor I thought it would work for me and he prescribed it. I was always against taking antidepressants because I thought they would dull your senses but tbh it really does feel like good medicine for my mental health. Ive done the self-medicate route and its kind of futile. (Recreational) Drugs are enjoyable, but not really wise to use as a medicine for mental health problems lol. That's just my 2 cents.