I was diagnosed in 2008 but spent years and years in denial about it. I FELT just fine. My doctor would scold me and I'd promise to do better, but I didn't. Totally delusional, but I honestly went on for years like that. I did stick with the metformin and glipizide, but that was it. I didn't test, didn't eat right, and was generally non-compliant. It was just March of this year that I decided to finally just grow up and start taking it seriously. I don't know exactly what happened that made it the right time, but it was. I'm currently using a Libre2 CGM and plan to keep using it for a few more months. At some point I'll probably stop once I'm more confident in what is OK and not OK for me.