Much like our birth fathers, God teaches us that discipline is necessary in life. When a child or even an adult goes through life without discipline, they are missing out on the character building necessary to make them a better person. However, even though we're aware of this, Christians can have a hard time disciplining themselves.
Self discipline is not an easy task, no matter how faithful a Christian is. There are temptations throughout life that will constantly plague you - but if you use the Bible to help you become disciplined, these temptations won't matter as much to you. Imagine a life where you can strongly stand up to any temptation. That is completely possible through Jesus Christ.
Read the Bible verses about discipline below. Truly meditate on their meanings and how you can work self discipline into your own life. It won't be easy, but it might be one of the most important things you can do for yourself as a Christian.