You need to have an MD [psychiatrist or GP but in your case preferably both] who is willing to back you up about the need to be on disability.

If they don't believe you need to apply for disability or have a disabling condition, it is a huge blow to your case. Essentially, you can't win.

Having a therapist provide documentation is helpful as a supplement, but not enough.

The thing is, even if you do reapply... SSA will likely look at your case and wonder why you haven't sought treatment for so long, follow up being that since you haven't sought treatment in a significant way, you can't really conclude that you are disabled in a significant manner?

[I'm not judging this to be true or not, but this is a fairly likely conclusion on the part of the SSA]