A discipline person gains trust and respect, trust is very important in our todays world and many people have lost that characteristics because of inability to comport theirselves and maintain a good reputation in the society, just as your parent thought you this I believe you will pass this onto your generation looking onto you as an example.

A person who is disciplined will have a good personal growth, that is continuously learning, improving and adapting to change

I have learnt greatly from this piece. Goodluck bro