That's pretty-much what I have come to after so many years... I just am who I am... & it all just is what it is.

I've read that you have to learn to accept yourself as you are before you can change. I don't know if that's true.

Perhaps it's true that one has to be able to accept oneself before one can change. But accepting oneself, as one is, doesn't necessarily mean one will change. It simply means that self-acceptance is one prerequisite for change. In my case, it's just too late for it to make any difference. Too much water has flowed under the bridge, as they say. So, as I wrote above, it all just is what it is. I leave it at that. I hope you can find a way to accept yourself just as you are; & that you can then build on that to grow in whatever ways you might wish.