“No discipline seems pleasant at the time, but painful. Later on, however, it produces a harvest of righteousness and peace for those who have been trained by it.” – Hebrews 12:11 NIV
Discipline helps us keep things in focus. If you have ever known a person or yourself with OCD tendencies, you understand the peace they derive from everything being orderly. This goes for their schedules as much as their environment. Having the discipline to organize your day / week / month gives you a focus and peace that can help combat the rest of the chaos which inevitably comes. This can be especially true of Monday mornings.
Here is a quick link to a good infographic on some Sunday night rituals to help you bring some discipline to your Monday mornings.