I often lose my temper when altcoins drop sharply.
And in general, I sell altscoin at the bottom
I think it is bad idea to sell your tokens at low price because the money you buy to get will be wasted. You should control your emtions at trading because if not then it will lead to your loss. In my case if I have seen my tokens is at low price I will hold it and sometimes I will buy more and I'll wait till it pump again before I sell it.