TL DR
0:35 Not earning enough money
2:20 Under-saving
4:20 Not setting financial goals
6:15 Over-spending (on the wrong things)
8:35 Not taking enough risk
10:38 Taking the wrong kind of risk
12:23 Missing tax planning opportunities
13:10 Ignoring estate planning
13:45 Marrying a financially incompatible spouse
14:38 Under-insuring catastrophic risks
Quite a good list. Boosting income is one of the best things for personal finances. But unlike Ben Felix, I don't think that acquiring special skills is the best way because foreigners with special skills are quite plentiful.
Singaporeans have an advantage in decent English and generally easier to understand when doing presentations to clients and bosses. Couple that with an above average EQ to be able to manage a team and bosses, you have a skillset that is in demand and not easily obsolete. (I assume that humans are not ready to be managed by AI

, so you need human team leads/middle managers )
Not taking enough risk is also linked to income. If you have a higher income, you are likely to be able to take more risk, since your income can replenish losses you make.
Financially incompatible spouse, we see it so often with men claiming they FIREd but their wife still working.
