I could have totally written your post! I have been treated for general anxiety and depression for over three years. My son was recently diagnosed with ADHD and my brother had it as a child, and says he still has symptoms. I too am a creative entrepreneur. I just read that 95% of patients self-diagnose themselves and 43% of doctors don’t even believe or recognize ADHD.
Do you see a psychiatrist? If so, they probably know you the best and can help to diagnose you. ADHD in adults is said to be very much like anxiety. Reach out for help. Good luck!