About 3 months after I turned 20, I met my first girlfriend at San Fernando Valley State College, which is now known as Cal State Northridge or CSUN.
Later that year, I went to the Summer Solstice celebration at Golden Gate Park in San Fran during the Summer of Love in 1967.
I stayed in SF, lived the hippy life there for about 6 or 7 weeks, until I decided to go back home to LA and return to my job at the post office.
I started working for AT&T/Pacific Bell when I was 21.
I joined the US Navy when I was 21 to avoid combat in the Vietnam War, and I was stuck in the Navy until I was 25.
However, being in the Atlantic fleet of the USN did enable me to avoid any combat. :-)
Later that year (Thanksgiving weekend, 1972) I went downhill skiing for the first time.
I bought the house in which I still reside when I was about 27.
That same year I went on my first backpacking trip to the Sierra Nevada mountains.
Even though I was 30 pounds overweight, sunburned, and got about 3½ hours of sleep the previous night, we hiked up to and over Kearsarge Pass.
By the next year I had lost about 30 pounds and was in much better shape.
That year was the first time I went to Yosemite. We hiked up to the top of Vernal Falls and swam in the pool just above it.
When I was 29 I joined the Sierra Club.
Later that year (Labor Day weekend, 1976) we backpacked up to the summit of Mount Whitney (14,495 feet).
I’m mostly satisfied with what I did.
About the only thing I’d do differently is not go to Busch Gardens, get drunk, and get my knee injured.