What is your best strategy to make money with stocks?

I’ve been reading a lot of stock books lately, and I feel a bit overwhelmed with all the info and strategies. I’d like to hear from others what is their best advice and strategies on investing and making money in the Stock market.

For example, sell if it goes down 10%; sell stock in the first hour of the trading day; buy stock in the last hour of the day; use covered calls; buy puts; etc.

Thanks. Hopefully this info can be helpful to others as well.