The only things I keep hearing to end isolation are to go out into the world and do something w/ people. Like you have to risk getting hurt to get a rewarding relationship, but I don't want to get hurt anymore. I guess the best way to put it is either you hide from the world and are guaranteed to be alone, or make an effort and then you've got a chance to end the isolation. Better to have some chance vs. no chance.
Having said all that I'm struggling w/ the same thing and I hope I have the courage to put myself out there b/c I'm sick of being alone and scared, not knowing what love is or if it's even real.