Go out and do something

Go somewhere you haven't been yet.

Go places where there are other humans.

Go find a hobby you like and join a club.

Talk to people

Start practicing kyokushin.karate. most modest and humble people you can find who train hard to find peace

Go to a bar, talk to a stranger. Do it again. And agait. You'll learn, it'll become easier

Just do something, anything. Go out, meet people.

That is your cure