It's only a matter of time. Your current situation isn't your end result yet, this is a stepping stone. I know how that might feel, I used to stop college (I'm back now for my final semester) and during that time I avoided people too. Shame IS the problem, speak out don't be afraid about your truth. I was also diagnosed with a mental illness, when I spoke to my friends about it, it was freeing because didn't feel like I had to hide something. Read and watch videos about what Brene Brown is doing, she's working on what she calls being shame resilient. You're still worthy of belonging even if you aren't where you want to be right now.
According to Brown –“Shame is the intensely painful feeling or experience of believing we are flawed and therefore unworthy of acceptance and belonging." The thing is your worth doesn't decrease because you're a janitor. Speaking out about your story is freeing. And if other people look down on you, it's more about them than you. What matters more is how you look at yourself and what you expect of yourself in the future.