The hardest part of investing is doing nothing

Making excellent technical analysis?

...nope

Being good at knowing when to quit?

...nope

Taking profits?

....may be one of top 3 but not the first one

Being a perfect moonshot shitcoin detector?

.....that's just pure luck

Not telling your investings to your friends/family?

....well that's also top 3 for sure but not the first one

None of the above....

Holding and doing nothing is the hardest part of investing. It requires a solid psychology. If you're good at this, I think you are %50 ahead of every investor.