Early retirement ecstasy wearing off

Almost 2 years have gone by since I decided to take early retirement. The concept of a 'perpetual holiday' worked quite well initially but does not hold the same thrill and charm any more. Increasingly, I find myself craving for some meaningful and constructive routine activity. Two months ago I was so bored that I was feeling emotionally pretty downbeat for a few weeks. Then I started planning a holiday in the USA and that brought back some excitement in my life. I'll be leaving for a 5-week holiday in the USA this week. I'm sure it'll be great fun. But after my return I have to seriously think about how best to lead my day-to-day life. Leading a totally 'retired life', as I have been doing since June 2006 does not seem a very good idea any longer.