If a mid-life crisis arises with the sudden realization of one's own mortality, then mine happened in my 30s and led to my early retirement.
Until then, I blindly followed the rules. Work hard in school so I could get into the best college, work hard in college/graduate school so I could get a good job, don't drink, don't smoke, don't party too much, don't do drugs, find the right girl, get married, buy a house... The job turned out to be a disappointment and I started regretting studying so much and not enjoying life enough. So early-retirement has been my way to rebel against conventions and regain control of my life.
Up to the disappointment part I could've written this.
In my very early 30s-ahead of the curve!-I was working a stressful job, and had a new child. Got a call from the Doc telling me I had about a year to live. Fortunately, he followed that up with "unless you have heart catheterization." Had three plus a pacemaker before the problem was (hopefully) permanently alleviated.
Caused a lot of introspection! Result:
1. Learned about E-R, and set-up finances to try to accomplish it in my 50s. This was a by-product of my health scare-I feared what would happen to my young family if I became incapacitated or worse.
2. Changed jobs over the course of the next few years. Found something less stressful.
3. Spend more time w/family. Had another kid. Work half time, and try to be Mr Mom the other half.
4. Started volunteering for Boy Scouts and homeless shelter. Always knew I wanted my work to make a difference for others, but confirmed this.
5. Decided to have more fun with hobbies. Took up beer brewing and bbqing/smoking (As I say, I make all the manly foods.). Always loved music, but have no musical talent 'cept listening. Hand built a killer system: tube amp, pre-amp, phono amp and speakers. Bought/inherited several pieces of antique furniture. Restored them.
6. Personality changed. Formerly very easy going. Became an uptight *******. Eventually found the middle ground between the two. MUCH less willing to put up with BS, much more likely to tell people what I think than before. This is ocassionally problematic
.
Just turned 40 this year. Not currently expecting another midlife crisis. I'm hoping the early 30s shocker innoculated me. Plan to add another hobby. Fix up the '76 Monte Carlo! As I like to say, while I can't be restored it can.
I should give mention to a VERY patient and understanding wife that put up with me through all this.