no one knows when the price can get high but you can sell your coins when the price reached more than 20% so you can take your profit. but my advice, don't sell all of your coins because you can wait for another increase in the price and you will earn a bigger profit. there will be a time for the coins to increase and decrease and it is our jobs to find the time so we could still make a profit. with doing this over and over, I am sure that you can earn more profit.