I agree with CaliGuy. It's the time to reflect on yourself, see where your shortcomings may be in all aspects of life, not just the M. A time to improve who you are and become the person you want to be.
I've grown a lot personally, recognized a lot about myself that I want to change ... not because I want my H back, but because there were certain aspects of my personality that were unhealthy for me in a lot of relationships, not just my M.
It's also a time to explore things you've always wanted to do but the time just never presented itself.
And time to find that inner peace that says "I'll be ok" regardless of the outcome of this sitch.
Best of luck to you.
Me: 59 and holding H: :53 Me: 1 S, 1 D, both grown M: 19 T: 23 BD: 9-23-2013