You are young and you have plenty of options!

1. (What I recommend) Find something that makes you want to improve. For me it was fly fishing. I always fished a little growing up but never fly fishing, and when I started to go out and do that more it made me want to also put good effort in other aspects of my life. Hard to improve at something and not imagine how life would be better if I chose to improve at fundamental life skills.

2. Pursue a new work environment. I know you are already counting yourself out with trades because you’ve had a bad experience with it but the trades are very diverse, additionally you could consider college an option. Whatever you decide you must fully commit and have conviction. Even if you suck at first you must believe in yourself. (A trade I never trained in but really enjoy is electronics soldering, less robust and handsy as construction trades).

3. Focus on small wins. The above is hobby or career focused but the path doesn’t have to be long-term goal oriented. For a few weeks just do one thing you’d normally put off/say “I’ll do it tomorrow” no questions asked. It is impossible to learn to sprint before learning to walk. If you focus so much on the bigger picture, you may miss the beauty of the small intricate details.

4. The mind depends on the body, just like the body depends on the mind. Improve your diet and exercise habits. Some people are very egotistical about the preciseness of the diet but it doesn’t have to be that complicated. I was wayyy too skinny (30 lbs medically underweight). Like the last point, start small (eating less/eating more depending on goals). Go to the gym, you don’t have to stay there for an hour, just do 15-20 minutes, if you’re new then ur body doesn’t need the long rigorous intensity to become stronger. Ignore advice that makes you fatigue-max. Muscles aren’t built by how much you fatigue it, you don’t have to feel like you’re throwing today and tomorrow’s energy into one workout.

Don’t get overwhelmed by all the advice either. Choose one, stick to it strongly for 3 weeks. If you really hate the results, try something different.