Ground your confidence in how you work, not in what you currently know.
Knowledge based confidence is a trap, and it gets more dangerous the better you get. You learn a stack deeply, you become the person everyone asks, and your sense of being competent quietly fuses with that specific body of facts. Then the company changes direction, or the tool is replaced, or you move teams, and your confidence walks out of the door with the thing you knew.
You have seen this happen to people with fifteen years behind them. They are not less capable than they were. They simply tied their sense of themselves to a body of knowledge that had an expiry date, and nobody warned them it did.
The durable version sounds different. It sounds like this. I do not know this yet, and I know how I find out.
That sentence rests on evidence you can actually collect. You have learned hard things before. You have opened unfamiliar code and made sense of it. You have walked into a domain you knew nothing about and been useful inside a month. You have been the lost new person several times, and you came out the other side every time.
So keep track of that. Not a list of technologies. A list of the times you were lost and then were not. How long it took. What you did first. Who you asked. When the next unfamiliar thing arrives, you are not guessing whether you can handle it. You have a record.
This changes what you say yes to. If your confidence lives in what you know, every new area is a threat to your identity, so you defend your corner and call it focus. If it lives in how you work, unfamiliar work is just the ordinary beginning of something, mildly uncomfortable and entirely survivable.
It also makes you easier to be around. People who need to be the expert in the room are exhausting. People who can say I have no idea, let me go and find out, are the ones everybody wants on the hard projects.
What you know will keep turning over. How you work is yours to keep.
– Asael Shinder
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