If you quit now so you let the whales win the war. Thats mean they can buy many btc or eth or another coin at lower price and sell it in higher price. If you already get profit, you can sell it now to save your money then buy back when the price start to pump. So you can get more profit. Ussualy at the middle year like this the price are dumping and will be raise up again at the end of year. Try to follow the whale's play so you can earn more.