It's not that cut and dried. Comorbidity of ADHD and serious depression or anxiety is something like 80%. Depression also affects your ability to focus. Either

It's not that cut and dried. Comorbidity of ADHD and serious depression or anxiety is something like 80%. Depression also affects your ability to focus. Either way, you should get help if it's negatively impacting your life in ways serious enough that you've made concerted efforts to stop. That's especially true if you haven't been able to improve it yourself.