I have a problem that every time i want to start new hobby, i cant work on it for long enough time to develop it into a habit. I quit the hobby i started even less than one month after starting it, even if i am excited and interested in working on it for a long time.

Since i dont know if i really have an adhd, because psychitriastists i went to say that i dont have adhd, despite i have common symptoms like lack of motivation, problems with learning and work, and problem with working on hobbies for a long time, i need to somehow find a way to work on a single hobby for a long time, without meds.