But the fact that there's still some that didn't know when to have a good entry and exit point. So let's make it simple, sell when you at least profited like have a target percentage and buy at ladderized like buy with just 40% of your capital and 30% and so on and so forth,in short don't go all in. In this way you can minimize your losses and maximize your profit.
The biggest mistake for me is to deal with a single coin. Do not resist to get many of the altcoins - it will give you more chances that you will be not a loser.
Not just in a one basket take it to any other coin that are having potential this may also have to be more practical take all the chance to be trade with a profit everyday.