Everyone has made a wrong decision and in the end you return with regret.As an investor you need not to panic.There is nothing wrong when your in panic its normal and you can over come it.
Do not make any decisions in a state of stress or panic, because in this case you risk making the wrong choice. Panic won't benefit you any good most of the time since you are not in your good state of mind. Make sure to make decisions in a more relaxed environment in order to come up a more creative and profitble ideas.