A well-organized life can benefit the mystic enormously. It's not a coincidence that many mystics who live in communities have a particular schedule they follow on the daily.
For those of us who are busy attempting to discover "God in the marketplace," we likely benefit far more from an organized life.
Life can be hectic and stressful; the imposition of a schedule helps to reduce the chaos and produce an effective means of bringing necessary peace to our lives.
One might also consider meditation to be a form of "chaos-reduction" in our mind; meditation does its own kind of organizing of the mind by allowing our brains and bodies to simply stop for a bit, to take a break, to engage less.
Deep deep has a similar function, of course- the deeper levels of sleep are where the brain is able to "prune" itself and purge what it needs to.
"Getting a good night's sleep" is a kind of medicine so many forget, especially in the USA; we have a huge emphasize on working hard and perhaps on eating a well-balanced diet, but I don't hear nearly as much talk about the necessity of not only sleeping but sleeping well.
Let us work to find what kind of schedule works best for us and our spiritual practice. Meditation and prayer alike take on different tones and roles at different times of day relative to our own schedule. Perhaps we should reflect on these things: what is prayer like for you in the morning? Noon? Evening? Night? And so on. What is prayer like for you at different times of the month? In different seasons?