What you have, is acceptance.
Acceptance of life on life's terms. And you creatively adapted. I had to do that a few times with difficult child 1, and am in the midst of an overhaul again with difficult child 2. Change is very hard to do, as humans are by and large creatures of comfort. Once we get into a groove, we don't want it to change (so can you imagine how traumatic change must be for our difficult children, especially those with autism?)
If you can learn to embrace change, even if you are not fond of it, you can find peace within it. Seems as though you have done just that.
Indeed, my difficult children have taught me more about life, love, and acceptance than any shrink or self-help book ever could.