'Doing the right thing at the right moment is the key'? I mean... no shit? Isn't the problem that it's impossible to know what the right thing to do is with any real certainty?
yeah, the article is a little vague about it though. but it is an important point. that being timing. to take actions "at the right moment". also there is no possible way to explain to someone when is a "right moment" because it differs in each market and depends on the situation.
for example a right time to sell is before a dump starts. not after it. a right time to buy is also before the rise not when a bubble forms.
these things are usually too obvious to even say but at the same time you would be surprised to find out how many don't even know them and never pay any attention to them.