Don't think I am giving you good advice or that I know what's good for you. I won't advice you, I lack the authority. You are in charge of your own truth, let no one tell you otherwise (psychologists and psychiatrists MIGHT be helpful, but don't let them fool you into believing that they know who you are or what you should do: keep your sovereignty. But don't take it from me.)

Why do think it is becoming unbearable to be isolated from your family, friends...Do you feel guilty for not being there for them? Do you feel obligated to value others above yourself? Or is it loneliness It is obvious you are in some kind of 'crisis'. You tell yourself you have to change, but what if you are already in the middle of a change? You are transforming into an adult - a dangerous road for all of us, a nightmare for many. Maybe you criticize everything because you need to criticize everything, you are occupied with yourself now, you don't have time for all that other stuff, because it's insignificant, you have an inner emergency for Christ's sake! Do you have to feel guilty for not being there for others, for not being social, when you are in the middle of an emergency only you can end.

(I would start traveling if I were you - you don't need a lot of money for that. Leave everything behind you for a while. I say this because I suffer from the fact I never really traveled when I was your age (I'm 30, as if it's impossible to travel at my age). I was one big mess, severely depressed, self-destructive and extremely lonely, I found my freedom, joy and social life by consuming dangerous amounts of alcohol and other narcotics - my freedom was a toxic soap-bubble, destined to burst. That's in the past now...)

I broke my own rules: I advised you. Should I call the cops? But I placed it between parenthesis officer!

It's probably impossible for me to help you. The only thing I know is that whatever you are doing, stop criticizing it.