Not sure if this comment was meant in earnest or not, but to be quite honest, "accept that you will sometimes fail" and "redefine what success means" were actually two very important steps in my journey to accept what my limitations were. I didn't get diagnosed until 28, meaning I had had a fairly long life of not succeeding at things, but also not realizing that I flat out was unable to succeed at them. So having to readjust my self-image to include this idea of a disability was quite challenging.

If you don't accept that you are going to fail at certain things or at certain times, then your failures will feel like your fault -- if only you had tried harder, if only you had worked more. By accepting that you have real limitations and will sometimes fail, each new failure doesn't have such a strong sting anymore. Instead, you are able to recognize it isn't your fault; you can pass the blame to your disorder, so to speak. Then, redefining what success means for you allows you to celebrate victories again. Ten years ago I never would have considered things like "I haven't been late to a meeting in two weeks" as a success to be celebrated, but now I do, so I'm able to extract some sort of satisfaction out of life with this janky brain instead of a never-ending series of disappointments.