Hey there Charlie nicki
I've been following your progress for some time now, it's unfortunate that you're feeling this way, I've been there before so I know how it feels.
The best medicine is to keep yourself busy, physically and mentally. Have you tried going to go the gym? Gym once got me out of depression, and I'm sure it's helping me stay away from it.
Recently I started having more time to kill, which made my mind think about a lot of negative stuff like: " I don't pass, I have no friends, my life sucks, and etc."
So I felt like if I started having these thoughts constantly I would go back to that less than pleasant time. But I decided to go on Udemy, and picked up a bunch of courses like Reiki master class, programming language, photography, and a new language.
Those negative thoughts went away almost instantly, and were replaced with thoughts like " I can't wait to finish this course so i can learn another skill"
Bottom line is, try to keep yourself busy, you can even take your car for a quick drive, or watch a movie by yourself. It'll help you discover yourself.
The world is your oyster, so go conquer it!