I actively disrecommend talking to a psychologist. If you suspect ADHD, the first-line treatment is getting stimulant therapy via a psychiatrist. Understanding and talking about your problem does not fix it. They've studied this, it's simply an ineffective treatment for ADHD. People go from being distracted all the time without understanding why to being distracted all the time with tools and techniques they don't actually end up using.

Stimulant therapy, on the other hand, is effective to a degree that every other mental health intervention wishes it could be. I am a relatively conscientious high performing software developer with medication, and borderline unemployable without it. Night and day difference.

Therapy and education is more appropriate for the people around the ADHD patient. Getting a sense of empathy for their situation and learning how to generate an effective context for them to operate in is incredibly valuable.