Don't jump on the assumption that you have ADHD. Get it diagnosed by a competent professional if you want to be sure. But even then, I feel like a lot of people get diagnosed with ADHD (or self diagnosed) while they probably don't have it (mostly in America is my impression).
Instead, it might simply be related to your personnality. I tend to be like you, and for me it is simply that finishing all the little details at the end of a project get boring and the new and grand ideas are more exciting.
Some suggestions:
Surrounding yourself with people who are good at finishing stuff can help, especially if it's on the same project.
Cycle between projects: when project A becomes boring, does project B become interesting again ?
Filter things to get the things that you're the most excited about and focus on the those instead. I found the book "Essentialism" to be particularly helpful for me in that regard.
Check for patterns: what are the commonalities between the projects that you are interested in ? Try to find what really gets your excited.
Finally, this is perhaps more controversial, but I recommend looking into the 4 sides of the mind theories by C.S Joseph on YouTube: your personnality type might be ESFJ-ESFP-ENTP-ENFP, and learning to leverage your psychology instead of going against it can help. It's similar to MBTI but less.. horoscope like in my opinion. Maybe the big 5 model also has something interesting to say in that area if you're more comfortable with something less novel but more accepted within psychology.
For me, learning about my strengths and weaknesses is something I found extremely useful.
Instead, it might simply be related to your personnality. I tend to be like you, and for me it is simply that finishing all the little details at the end of a project get boring and the new and grand ideas are more exciting.
Some suggestions:
Surrounding yourself with people who are good at finishing stuff can help, especially if it's on the same project.
Cycle between projects: when project A becomes boring, does project B become interesting again ?
Filter things to get the things that you're the most excited about and focus on the those instead. I found the book "Essentialism" to be particularly helpful for me in that regard. Check for patterns: what are the commonalities between the projects that you are interested in ? Try to find what really gets your excited.
Finally, this is perhaps more controversial, but I recommend looking into the 4 sides of the mind theories by C.S Joseph on YouTube: your personnality type might be ESFJ-ESFP-ENTP-ENFP, and learning to leverage your psychology instead of going against it can help. It's similar to MBTI but less.. horoscope like in my opinion. Maybe the big 5 model also has something interesting to say in that area if you're more comfortable with something less novel but more accepted within psychology. For me, learning about my strengths and weaknesses is something I found extremely useful.
Good luck!