I think you're making a good decision for the right reasons. Being mysterious is never a bad thing.
Spend time with friends and family, maybe go on a trip somewhere you've always wanted to go, start with a hobby you didn't have time for (I joined a choir, and singing with others makes me feel so good!), and pamper yourself. I also journal - especially when things get difficult or I can't sleep or am upset. It helps me put the thoughts away and move on with my day.
I think this is the only way you can give him a chance to miss you to where he might rethink his decision. In case he doesn't, your life will still be richer and fuller. I believe that every thing you do to create a life for yourself that has nothing to do with him or your mutual past, will help you feel stronger and more independent.
M 16 yrs, WH62, P54 3 adult blended kids EA 11/13, BD1 6/14 PA fall 14, BD2 2/15 Piecing 2015, BD3 12/15 Separated 4/16 WH moved OW in 5/16 Divorced 6/15/17