In some Buddhist meditation techniques, the practitioner is taught to repeatedly bring attention to the breath in fine, subtle detail. Whenever it is noticed that the mind has wandered far away, the suggestion is to bring the attention back to the breath. The intention is, I think, to refine attention as well as to become aware of the “monkey mind.”
I find it refreshing to pay attention to the breath, but from a slightly different angle. It is fun to see that the breath is simply happening. Similarly, it is fun to notice that the heart is beating, the body is spontaneously moving, thoughts and moods are spontaneously arising without a doer.
Attention to the breath is a powerful gateway into the realisation that “I” am not causing things to happen. Worlds are arising and dissolving without “my” having to do a thing about it.