Learning positional chess - Analysis vs Books

If you could pick just one of these (analysis or books) as the best way to learn positional chess, which would you recommend?

Why make it an either/or choice... I strongly suspect it is 'both'. If you're reading a good book (like Reshevsky's) you're surely doing analysis of the positions and games in it else you will learn next to nothing. Similarly, it's hard to learn positional chess just by analyzing something, getting input from a Master is really helpful.

I watch tournament a lot. Learning from the reality

Thanks @SomewhatUnsound. I was trying to learn positional just by playing and analyzing. And while ago I was reading a book about petrosian, but I was not giving too much importance to variations, but variations don't seem so useful at the beginning. Anyway, it seems that picking from the masters is the way forward. Thanks for the tip! I will try to always write all the variations from now on!

And what Reshevsky book would you recommend?

Books have a wealth of information. I always recommend books.

Pieces of theoretical knowledge are glued together with tons of „praxis“ to what is known as positional chess.

So, it‘ll take you some years of studying and moreover, decades of playing. Don’t forget the practical part, it is even more important.

I'd recommend "The Art of Positional Play in Chess" which is a really solid book, @marceloandarilho501. It's readable, broken up by example, and pretty cheap. Reshevsky writes about many of the important themes in positional understanding. I enjoyed it anyway, and I come back to it from time to time.