Self disipline is Self Improvement.
A person needs disipline in every form of his life. Without disipline you are in a random cycle, in which you can meet anything.
Disipline is just like going to gym. It is very hard but after 40 to 45 days it becomes your routine and normal. Disipline in the start shows absolutely no results just like gym. But once you start doing it months after months than you are going to see the results and that results are permanent. The pain wants you in your comfort zone. It is the only thing that keeps you away from achieving your goals.
So what i would suggest that you start acting right now using the tool of self disipline and consistency and move towards your goal a little bit but everyday. Let me remind you that it is not easy, but you need to keep that in mind that nothing is easy. So keep pushing forward and you have to be friends with being uncomfortable and if you feel tired in the way of achieving sucess than remind yourself that why are you doing it because you need to have great things in life because you desrve it.