I admire your openness about your illness! I think that misdiagnosis speech could be interesting.

Remember that misdiagnoses don't only happen in mental health, but in physical health too. So I think such a speech could apply to both mental *and* physical health, even if you're only talking about mental health specifically. It's about the journey, the perseverance. It's about getting well and knowing when to not give up. And even broader, we can interpret this journey as determination in general.

So I do think your speech could help a lot of people if you look at it from different perspectives. Plus, I think it helps with the stigma in general. Stigma arises from mosunderstandings (or ignorance), so you can educate them to stop it from happening!