3 ideas
Specific knowledge is the knowledge you can't be trained for — it's found by pursuing your genuine curiosity and passion rather than whatever is hot. Because it feels like play to you but looks like work to others, no one can compete with you on it, and it's often highly technical or creative.
Trading time for money caps your income because hours don't scale, so true wealth comes from owning equity — a stake in a business whose output is decoupled from your direct labor. Seek leverage through capital, labor, code, and media so a single decision can produce returns while you sleep.
Every desire is a chosen unhappiness — a contract you sign with yourself to be dissatisfied until you get what you want. Therefore happiness comes not from acquiring more but from reducing the gap between what you want and what is, by deliberately limiting your desires to the few that matter most.