I like Mishap's list idea and Gaga's contentment. Both good imo. I would also suggest find yourself something to be passionate about, sport, theatre, music or whatever. We are passionate about dance and it brings great joy to us. Yes, we like lost of other things but that is in addition to dance.
i wouldn't rule out moving to the 'country' but would suggest that if you think it might be an option you rent for 6 months to help with making the decision. We did it when we retired, a small town in the country and we absolutely love it. Having lived in so many different places it may have been easier for us to adjust than it would be for others and we just love the way everyone has time to be friendly which we didn't find in the London area. We don't think we will ever move again.
Good luck with your search. 
Anxiety over gc going on days out
Have you stopped buying papers?
Retiring and living frugally in money from downsizing after years of stress




