The panic sellers face the loss. I won't suggest anyone to sell his coin if he bought it at higher rate and now the price is lower than that time. Agree with OP, just hold your coin until it goes up again. I have invested also while the price was up. And I'm waiting for the good future. I believe it will be up again.
But not all the people have the patient to wait, they should if they are uncomfortable withholding their coin and it's become a source of depression if you bought on all-time high and you still holding your coin, congratulation it'snot really this easy since you have waited three years already, you just have to wait a little longer in a year time you will make a profit and your patience will be rewarded.