Hi Rose,
I am relatively new to depression but I have a long term disability acquired when I was 17 (long time ago). It is not only going anyway but also becoming worse. So, you acquire your disability, it takes some time (that can be years) to accept it; you learn how to live with your disability and then it gets worse and you have to start the cycle again.
To me, acceptance is the key.
I like how Wikipedia describes it: Acceptance in human psychology is a person's assent to the reality of a situation, recognizing a process or condition (often a negative or uncomfortable situation) without attempting to change it, protest. The concept is close in meaning to 'acquiescence', derived from the Latin 'acquiēscere' (to find rest in).

To me, acceptance is not forever. I need to start accepting again and again