Thinking is not the enemy.
If you use it in the right way and are aware that you are using it, it can be a beautiful thing. And I'm not just talking about practical thinking, navigating the world. I mean imagination, inspiration, flights of fancy, humor, mental juggling; it can all be good.
The problem arises when thought starts thinking you, misrepresents itself as raw reality, and in doing so takes over psychological control of your mind-body. At this point, you are in effect being held hostage by thought. And that rarely ends well.