[webwright]

"The dreams I had even six months ago, feeling ever more impossible."

Which dreams? Are the people who have achieved dreams like those that much more capable of you? One of my realizations is just how much less important intelligence is to drive. If you want something, oftentimes the difference is doing the work. Make sure it's a meaningful dream (e.g. not "get rich" which impacts happiness surprisingly little).

"I feel like I should find another job. Move to a different city or country. But I don't know how to do these things."

Are you more or less capable than the millions of people who find new jobs or move? You sound smart and educated. "Don't know how" seems like a pretty soft excuse. Everything has an "undo" button. Get a new job and it sucks? Well, you tried and learned some interesting things about yourself and the world-- go find another one. Move to a different city and find out that you don't love it? Well, you got to explore a cool place that wasn't for you, and maybe you met some interesting people. Move back or move to a new city.