I lend RM100k to a really close buddy like 10+ years ago. Really close buddy, even more close than my real brother. After lending him he says will pay me back by installment every month.

Sometime skip 2-3 months no pay etc. In the end now i see him he see me like strangers. Really dont lend any money to family and friends, you can "give" it to them but dont ever lend.

Bought too much insurance.

I knew about bitcoin when most people didn't know about it. A guai lou friend came to me and told me about this bitcoin thingy and told me he sold it for usd10 (he knew i bought a RTX 295 and told me he also using the same GPU, but was for farming bitcoin).

After x years he came to me again, that time bitcoin was around usd 100+, he told me he regretted sold the bitcoin for usd10. He already stopped farming bitcoin after he sold his first farmed bitcoin for usd10.

When bitcoin up to usd300+-, he came to me again and we chit chat abit.

Damn! He was like an angel kept coming back to contact me to inform me i should look into this bitcoin thingy! If i could spend a bit of time to understand it and purchase a few biji of bitcoins that time, i might add a few millions into my net worth...

did't buy nvidia & tesla when it was dirt cheap.

Invest in Bursa, should be invest in US instead of Bursa.

The things is even if you bought it at dirt cheap price (say 10),  you probably have sold it at 20 @ 100% profit.