Thanks for all your replies - they mean a lot!
I knew today would be tough, so I went to the gym last night to get some oxygen running through my veins. I usually walk on a treadmill for about 45 minutes. I RAN for an hour.
Him leaving my life has truly been the best thing for me - regardless of why he did it.
I guess it's time to create my own day (or vacation) instead of giving that power to someone else.