It’s all about positioning one’s career where one has max leverage which lead to relative higher career earnings; hopefully converting some of this to cash producing assets.

It’s similar to other advice I have heard such as one’s communication and general peoples skills tends to lead to favourable career success after a certain threshold.

A great article on why one should not depend on technical skills alone is https://leveragethoughts.substack.com/p/dont-hinge-your-care...