So a disciplined person is able to subject or control himself
A disciplined person is always in submission to certain set of rules and order. If you do not have any rules or regulations, if you avoid the word ‘order’, in your life, then you are undisciplined, and you won’t be able to experience any spiritual progress or growth.
Spiritual growth which is related to positive changes in a person’s life is not a heritage meant for undisciplined people. If a person lacks discipline, he will always break and ignore rules and regulations. It does not matter how many sets of rules and regulations he impose on himself for noble purposes, an undisciplined man will break them all as soon as he made them.