The calendars all use the start of the week as Sunday, but I'm not sure why.
To me, Monday is magic. A fresh new week. A new start. New beginnings, possibilities, hope, and adventure. And a time to let go of the old, the difficult, the mindset which as my friend Robert taught me in Zen is a bound mind.
Put away disappointment, forget the past except the lessons. You are eternal, but eternally now in this moment at this time.
That's my story and I'm stickin' to it.