How not to be like a rolling stone in research?
As a young researcher who is just trying to find his research path which I want to stay in, how should I make sure that this is the topic I want to do research in my whole academic life?


You can't. The world will progress, funding will change and your interests are likely to develop as well.


  How should I stop my interest to learn new topics disturb my research productivity in future?


There is inherent trade-off between focused work on a predefined topic and an open-ended mind-wandering. The current climate in academia seems to focus on productivity, which (in my opinion *) is not good for any non-incremental progress.

But as long as you find enough time to publish good papers, I wouldn't bother about not being focused enough (publishing requires you to focus, whether you like or not). 


  How should I overcome my desire to do research in many research fields and work on different research topics and stick to just one or two research fields and read papers and books only related to the research topic which I want to work on in long period of time?


Don't take a narrow (and, I think, common) definition of productivity as sticking to a narrow field and never wandering around. If you read a research-level book on another field (not just  - its first chapter) then it is not shallow.

* Piotr Migdał, There are no projects like side projects (on Albert Einstein, John Bell and John Carmack)