You are mistaking patience for knowledge. If you have knowledge and understanding, your patience (or lack thereof) is irrelevant...
Waiting for too long can be as disastrous
Actually those who are knowledgable are patient!
They can be as impatient as anyone else overall, psychologically speaking. But this is truism (like what you say), while the lesson to take home (reverse logic applied) is that if you feel impatience or some other urge to trade, it is most certainly a writing on the wall that you don't know what's going on and are relying on pure luck...
Since otherwise you would be coldblooded and rational (and either trade or stay away from trading)