There is no definite dividing line between a normal waking state and a hypnotic or trance state. Examples of alterations in consciousness occur frequently and most people experience some of them. Both children and adults can become so absorbed in daydreaming that they lose track of what is going on around them.
Some people consciously use daydreams to divert themselves from certain aspects of their existence.
When someone is concentrating intently on a work project, the hyperfocusing that aids the work may also shut out noises and other distractions. Adults who are hypnotized often prefer to have their eyes closed. This is not necessary in order to have a deep trance state. In fact, many children prefer to have their eyes open and even to walk around during hypnosis. While in hypnosis, one's attention and concentration is more focused.