I didn't travel, shag hot men, or shag any men either, and if you look back, probably not as men people did as you think. Just because you didn't do these things, it doesn't make,you life any less valid.
However, that was the past. The future you can change, and the way to do it is to make plans. It doesn't have to be grand or exciting. Join a local club, and see where that leads to. It can be anything - if you like the outdoors, join a rambling club, if you like the arts, join a painting class, if you like hooks, join a book club, or if you like music, join a choir.
If you want to travel, then travel. Join websites such as Groupon or wow her. They often have very good cheap deals, especially if you can travel off peak season.
The past you can't change, but the future you can. They say life begins at 40, so get into practice now at 35!
All the best to you.