Did you coin this phrase on your own?

Of course it has happened to many people. Getting stuck in the euphoria cycle is common specially the new entrants. The wise people will sell before the highest point is touched because they know that waiting for that top means a hurry in trade and possible exchange lagging, transaction fees being huge and all.

Altcoins specially suffer from these types of pumps followed by dumps.

But you are selling just before the top is reached you are still making a good profit. The important thing is to recycle the money after selling.