When you lack discipline, you don’t have to convince people, people will see. There are things that you can do and win now but you loose later. To be discipline involves waiting in testing times. You cannot be discipline when you are not patient.
James 1:4 But let patience have its perfect work, that you may be perfect and complete, lacking nothing.
You cannot separate patience and discipline. There are things that Satan will ring in our lives which for a moment seem good but the end is disaster. If you don’t discipline your mind, you’ll be caught in the process. Hebrews 12:11 No discipline is enjoyable while it is happening-it’s painful! But afterward there will be a peaceful harvest of right living for those who are trained in this way.
Be able to say NO to things that seems good. Lack of discipline is bondage. The fruit of patience is discipline.