Unfortunately the first step is the hardest but you sound like a mindful and self aware guy. Slow and steady improvements that are sustainable should be your target. It sounds like you have a fairly complicated combination of problems that you really need to lay out bare before you can set out a plan. A few areas that need your attention in my view:

1. Alcohol / drugs - priority 1 is to pull the plug on the booze and drugs. You need to keep a clear head and remain as clean as possible. This will help you focus and ensure you will have more energy to invest on things you care about.

2. Sleep patterns and routine - set a bedtime and start your day when other people that you want to interact with start their day. You should try this for at least a month and be really strict with yourself on routine. Fine tune and make sure you get enough sleep - again you will boost your energy levels, you’ll be more alert and you’ll be able to function better overall.

3. Gaming - its good to do a bit of gaming I find its nice to decompress - just have a set time for it and use it as a reward. If you have other more important shit to do then make sure you don’t start gaming prematurely or for too long.

4. Vocation - Find a job you enjoy doing and stick to it. There is no job that is perfect out there - every single industry and position has some downsides. You have to power through and not give up. I believe part of your issue is that you’re basically completely exhausted because you haven’t rested your body and mind. Doing that one day is bad. Being exhausted for a number of months let alone years starts to fuck with you in a massive way. Definitely stick to your exercise routine thats also important.

5. Social circle - Find a productive and social hobby - join a club and meet some new people. Again, like minded people that you can interact with whilst doing your new found hobby. My one was road cycling - it helped clear my mind and I got the fresh air I needed. Met some great people through that.

One day at a time - chip at it slowly. Never give up. You’re still a very young man and have your life ahead of you! Best of luck I hope some of this stuff is practical.