Self-Discipline means knowing what is right and wrong and doing what is right. It doesn’t just “happen.” It’s intentional. It’s repeated. Every Single. Day.
If you struggle with self-discipline, the good news is that like a muscle, it can be developed. The more you practice your self-discipline, the more organized you become.
Forming a new habit means disciplining yourself to do what you have to do no matter what your state of mind is. Identify the new habits that you need in order to replace the bad habits that you have. Plan your new routines. Teach yourself to do them, whether or not it feels comfortable or pleasurable to do. Often it involves sacrificing the pleasure and thrill of the moment for what matters most in life.
When you really, really, really want to give up, don’t stop. Still, keep going. I know it can be hard at times when procrastination attacks and you want put things off right away. But you can't call it a day until what you set out to do has been done. Discipline doesn’t depend on your feelings. It happens whether you like it or not.