Earlier quoted context omitted.
Exactly. And nor does anyone have a 'career'. You have a job. When you lose that job, you may not get another one. It's an illusion. One minute you think you are a high profile manager with budgets and power. The next you are packing your desk up into a box and rethinking your entire life. We are not our careers!
I am always terrified of losing my job. It's a fear I've had even though I've been a top performer the entire five years I've been professionally working. Maybe it's because I grew up poor or because I think things are too good in tech and about to crash any day. My antidote? $100k in liquidity. Preferably not invested in the NASDAQ. If tech crashes, you can take your liquid $100k and move to Thailand, Spain, Portuga…
I stopped fearing that when I became a freelancer. It's done wonders for my confidence, and I'm much more productive as a result.
It also helps to be married; two jobs give a lot more security than one. Even so, having savings that can last you through a downturn or possibly even fund an early retirement, is definitely a good idea.