It is hard for me to remember how uptight I was when I reached 30, but that was (ahem!) several years ago now, and I have learned to take the years in stride. My best friend's birthday is 3 days before mine, and we still crack jokes about her being more ancient--some things do not change--enjoy them, as well as the changes which do come.
History is full of secrets, most of which are not even known to exist today--because they were after all, secrets, and the people directly involved frequently did not survive long enough to even pass the knowledge along. There are also the ones which ARE known, and just might someday be solved--just think of Amelia Earhart and Jimmy Hoffa, for 2 very famous secrets!
Since there is so much to see right here in the United States, I would like to visit take a really long trip and see many of the spots I have had to miss because most of my travel was business related and there really wasn't time to do much else.
I apparently have a rather weird sense of humor--at least I am always being told so. Personally, I just think that other people can take life too seriously--better to laugh than to cry.