Mental Toughness

Self-discipline is a goal that will only be accomplished by following a path that will cause a great deal of pain. Walking this path will require a good deal of hard work and dedication because this path is not an easy one to walk. Sometimes, people fall off. Sometimes, the direction of the path needs to be changed. Sometimes, the path needs to be broken up into smaller trips in order to be able to complete the whole journey.
Self-control and self-discipline require hard work and serious commitment. If a person is not really serious about the need to develop self-discipline, then it just will not happen. No one can give anyone else self-discipline. It needs to be learned within.
However, consider what happens if self-discipline is never developed. Can a person go on in life without ever developing any level of self-discipline? Of course, they can. What they will be missing out on is a lifetime of achievement. They will be giving up all sense of self-worth and self-fulfillment. They will lose out on the ability to replace bad habits with good ones. They will never know the joy of getting rid of addictions and temptations. They will be forever plagued by negative feelings of anger and regret and guilt. They will live their entire lives accomplishing nothing because they lack the necessary self-discipline to accomplish anything. They will not succeed.
Of course, it is a purely personal choice. It is possible to live life without accomplishing anything. It is possible to just skate through life devoid of any sense of self-worth and self-love. It is possible to get to the end and never achieve any type of goal. However, what kind of life would that really be?
Most importantly, remember that a successful outcome will be its own best reward!