of course people have different skill so they will have different methods too.

Invest in ICO isnt good anymore, many ICOs are scam makes it's not worth.
read this : New Study Says 80 Percent of ICOs Conducted in 2017 Were Scams

trading is good if you understand TA and FA. but if dont understand, you must learn more and needs much time to be good in trading.

holding isnt good, yeah market goes down and down make holding isnt good.

Bounty, some people prefer to do this one because zero-money-risk. maybe they just lose their effort and time.