One definition of Hypnosis is: a state of relaxed focus.
The hypnotized person is basically absorbed in a task or focus on one thing in particular and seems to be excluding everything else. As such, we can call this “Living in the moment’.
As our brain is subject to many external stimuli as well as our own internal thoughts flowing in and our, there are just too many things going on around us for us to pay attention to. Hypnosis is one way for us to get to be living in the moment.