You are here, because at some point you know that there is both an exciting and needful part of your desires is to have control in surprising unexpected ways.
To willingly and continually accept or seek someone to take control over you this way, is the expression of submission. Discipline is to submit to the will and manner
of this control you seem to keep seeking and craving with routines and chores of power exchange, or punishments giving and happily accepted.

To experience the trills and excitement of submission or discipline, it is by choice to let someone else overpower you. This is an exciting way to simply satisfy one basic urge.

Submission is also an expression of resiving direct attention, in fact is total attention given to you very intensely. For that you need to agree and consent to receive attention that way from someone.
Thus submission is what you offer and agree to give in order to have a professional or non professional power exchange session.