Patience....."waiting for the right pitch" as Buffet has said before. Knowing when to "load the boat".
Learn how to recognize fundamental value when you see it and place a decent sized bet.
I still heartily recommend the easy to read "Reminences of A Stock Operator" for all that have never read it. It is an excellent and entertaining old "trading" book. It will give all investors "things" to think about.
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