However, besides their feature to reflect the ego and personality of the owner, the main purpose of the wrist watches is to help us correctly organize and successfully control our life rhythm.
A lot of research in psychology has supported the concept of "ego depletion" — that having to restrain yourself wears out your brain and makes it harder to exert self-control over something else.
The ego effect is a strong power in the behaviors and operations of mankind. It has very important function in the control and regulation of behaviors.