Sorry to hear you are struggling. When I was younger I had mild depression but I eventually was able to overcome it. It wasn't as severe as what you are describing and I never had anyone betray my trust as you experienced but I think I can relate a little.

Some of it was improving my diet and just getting out of the house more some of it was just realizing that comparing myself to others and trying to meet other peoples idea of normal or their expectations was bullshit. The only person you should be comparing yourself to is yourself.

You mentioned how everyone you know has it together but in my experience that is rarely the case. There are very few people that have it together. There are a lot of people that present the image that they have it together but when you get past that shiny exterior they are usually train wrecks. It just isn't the side that they show the world, they are walking around all day with masks on.

Another thing I am becoming more and more aware of lately is that there is a lot more random luck to peoples success or failure then anyone wants to admit. Certainly the people who are successful (whatever that means..) don't want to admit it. That would hurt their self image they have where they have it together.

Have you thought about helping out a charity or something? Helping others is a great way to get out of the house and start interacting with more people. Usually when you help other people you start to feel better about yourself too.