I retired for the first time in 2004 at the age of 37. I quit my permanent job where I had been for about 8 years, gave up my apartment, got rid of half my stuff and put the other half into storage ... then travelled to Australia and toured by bicycle for the next 3 months.
When I returned to Canada, I went to University where I got a degree, took temporary jobs between semesters, and made a point of travelling and touring for a month or more each year for the next 5 years.
Don't wait 15 years to do long tours locally and overseas ... start now. If you haven't gone anywhere this year, take a month and go travel!!