Holding BTC a long time to make money is not good idea, better try to buy some altcoins at low price and then sale them at higher price, and change back to BTC

But altcoins also burns our money very easily.
According to me buying altcoins is like gambling with bitcoins, which i don't prefer because at the end in gambling only the house wins.
Trading needs research before going into it, it is not that simple that buy low and sell high.