Social Security doesn't really care about what diagnosis you have. That's because there is someone out there with that exact same diagnosis who is holding down a job. This is true for every diagnosis you can think of. What they care about is your own level of functioning. What they also value is input from a doctor who might be supportive of you filing for disability.

You're kind of off to a bad start with this. I would strongly advise you to hook up with a lawyer. A law firm would have already gone about things a little different than how you have. It's not too late. I recommend those big disability law firms that advertise on TV. They have an office full of staff to make sure that your medical records go where they are supposed to go. That alone is why it's good to hook up with a disability law firm. They know what records are needed. You'll be guessing.

If you call a law firm now, they may say to call them back after you get denied. Or, possibly, they may take you now. They'll mostly be interested in what meds you are taking and if you have gotten treatment. If there is any kind of a day program you could get into, try to do that. The VA has PsychoSocial Rehab programs. Try to get into one. It would benefit you and show that you are getting treatment. Then ask your doctor and psychiatrist about whether they would assist you in getting SSDI. If they say yes, then you are half-ways there.

The main thing that the people at Social Security take an interest in is if you have a good paper trail of treatment. The discharge from the army helps. But get all the treatment you can.

Being fairly young is the one thing that is not in your favor. You may have to show a series of attempts to hold jobs that failed before they will take you seriously.