This is definitely tough to read for all of us old farts because we've all been there to some degree. Like how I look at kids about to head into middle school and remember how awful that was and how I'd like to do or say something to keep them from all of that hell. But I can't. Same thing's going on here, and I think you recognize that. We all go through these rough patches and most of the time come out for the better. It sounds like you're ready to blast through this down period and make a move that will make you a lot happier on the other side.
It always sounds like you do a lot to work towards your dream, hitting Halo Forge really heavy and tinkering around in Mincecraft. I'm no game developer, but if you can prove yourself using these sorts of tools, I keep hearing that it's a great way to get into the industry. Granted, I normally hear this about mods on the PC, but what you're working on in Halo is basically the same thing.
If you want to show what you've been working on to someone else who "gets" games, I'd love to check your stuff out. I have no career advice or anything to provide, but I can poke around in your creations so that they come to life for someone who didn't help make them. Send me a friend request on Live if you ever want to - if you don't, that's fine too!
Stay strong, Mikey!