is motivation always enough?

Have you realized that when you get motivated about one thing, your motivation for other things you have to do fades? Or is that just me?
I am working on my final paper and I am extremely interested in the topic but as more and more challenges arrive I start focusing on other things I'm passionate about. And my motivation for those things grows and gets me all excited. But my motivation for the final paper dissapears :(

Another thing that I see happening more and more with me is that I can only focus a short while on each project. If I try to stay to focused for a longer time I get restless and less productive than I could be.
I need to have many projects going on..
but that also means that it takes me longer time to finish what I have started... because I start so many things.

I believe I'm a very motivated person. I get highly motivated very easily, through arts, music, people, conversations, books and through much more. however, my drive to be productive is not as easily sparked.
I always thought motivation drives you - and I still believe that it can and will.
But it's not the only factor. I guess.
But what are then also part of driving productivity?

In my case, if I'm motivated but not organized I dont get things done.
I get easily distracted as I find so many other things interesting.

So what can I do to be better?
I know I can be better.
I know I can be productive and motivated and deliver on all the exciting projects I have started. But I also realize that I might need help getting to that point.
where do I start looking?

Well, if anyone out there can share some light - I would be very glad.
- with love -