I think panic selling is the worst way Because this movement puts the investor in harm and destroys his profits. In such cases, panic selling should never be done 2. way much more profitable and reliable. Just follow the market and don't take any action. When you are sure then do it.
Both of them are worst from the point of view of a potential investor. I think that one should be not go for panic selling when the price is falling. The market is very much exposed to fluctuation. Those people who loose value in recession gain values again in boom. About postponing, I would say that there should be no good byes to the technology. This is worth investing in and can be extremely instrumental in future to maximize your value.