The Dunning-Kruger effect describes the phenomenon whereby people with relatively little experience feel a high degree of confidence. This point is known as Mt Stupid.
Following this is the valley of despair, where the person loses their confidence, before slowly climbing the slope of enlightenment. The shape of this curve is strikingly similar to the Gartner hype cycle.
It is always tempting to think that I myself was atop Mt Stupid a couple of years ago, thereby making me on my way up the slope of enlightenment. However, I think this every time I see it.
This article makes the wise point that you can be on the slope of enlightenment for some issues, and still climbing your way to Mt Stupid on others.
However, given that the human condition makes it difficult for each of us to realise the limitations of our own knowledge, we’ll have to live with temporary outbursts of hubris. There is no reason to be self-complacent. Everybody is a wise expert in only a few things, while still climbing Mt Stupid in many, many others.