I think that now it's such a time that growth can begin at any moment and it is possible not to have time to purchase. For this personally, I do not sell my tokens, but just hold them, waiting for the end of the red zone of the fall and the beginning of growth.
for the decline that I currently prefer to hold my altcoin in comparison must buy Altcoin then from now on it's an average fiat down and better we hold my altcoin and wait until it stabilizes and could benefit again