Im 57 on friday and my new life started 3 months before I was 55. It was very difficult at first but Im doing really well now and life is good. Im very fortunate in that I have smashing children (and grandchildren) around me who are all willing me on, as well as fabulous family and friends. I honestly didn't know there was so much goodwill out there for me from my extended circle and its been quite a shock. 
I have no intention of getting together with anyone else for various reasons with the most important one being - I'm happy the way I am. I like the life I now have.
Financially my life hasn't changed from when I was with my husband and I know in that my situation is very unusual.
I have however started my own business since my separation and Ive surprised myself at being good at it. I'd never worked before, I'd always been a housewife, and I approach my business from that perspective - its just like running a house and family.
Hobbies - Ive taken up Golf, and swapped my (late) handbag sized dog for two huskies that I came across in a doggy rescue centre and when they have me pinned against the wall in their rush to say 'hello' Im in seventh heaven.
You are 50 now and you either have to make your current situation work, or make a new situation.
A big part of me making my move was my children telling me mama if anything happened to you today out lasting memories would be of how unhappy you've been for a few years. They deserved better than that and so did I.