Stick to long term investment is because honestly it is not easy to watch all the time for the market.
How to select the companies as long term investment?
1. realistic question, is the company profitable?
2. hardly substitute by others? or hard for new entrant to enter the industry?
3. doing good in the operation? reading news for this
4. do you have enough confidence towards the company? means if the price is dropping but you will not selling it due to panic
5. or if you have selected the ETF, is the ETF has a diversify portfolio?
therefore, I think quite a lots factors you need to consider when you have decided to go for a long term investment
happy trading

If I have one million, I will allocate into 10, 50% for shares, 30% for bonds and 20% for ETF
50% shares will be included companies from different industries
Apple
Tesla
Amazon
Costco
McDonald’s
Starbucks
TDCX
O
ETF selection will be SPY/VOO/IVV, SMH, QQQ, OGIG and so on…just choose those you comfortable with

I believed on Cathie Wood and have confidence towards ARKK