Well, at least you'll be getting the proper treatment now! That's a good thing

In my case, I always knew I had ADHD because I had concentration issues my whole life, but I was PISSED when they diagnosed me with bipolar disorder. I refused to believe it for like 5 months. Then I got mad when they said I had severe ADHD because I felt like it was an insult to call it "severe".

So, it takes time to accept it, but you will accept it eventually! Your initial feelings will calm down over time. I know mine did