Getting a good therapist that specializes in adhd & a good doc around medication can be a good place to explore how adhd has impacted your life and tools to help. I also really enjoy The Neurodivergent DBT Skills Workbook by Sonny Wise.

Give yourself time. For me it was quite a shock I got the diagnosis so late. So there was some anger and grief too. But knowing you're not the only one feeling a certain way is so relieving.

Congratulations, it was never your fault. The lateness, the forgetfulness, the distactability. It was never your fault. Now what? Now, you get to explore medication as an option. I started on meds over the summer, and I have never known such a quiet mind, such concentration and focus, such an awareness of myself and my environment. I wish you the best with all that comes next!