i think it is, because in the year 2011 you can buy a Bitcoin for only 4$ and if you buy 100 Bitcoin before and you still have it now , then you are a millionaire , and if you buy bitcoin now it's late, because the price of BTC now is expensive
If you bought a Bitcoin for only 4 USD in 2011, you would sold them at 8$ or 12$ bro 
.So hard to hold Bitcoin when it x5 or x10? right
. Stop loss is hard but stop profit is harder