HOlding is the best thing you can do for profit if you do not know anything about cryptocurrency or the crypto market. MAny holders have multiply their balance to many times. HOlding bitcoin is the safest way but if you want to earn more money, hold other coins such as ethereum, NEO, ripple
but holding suitable for long time investor.and it need long time periode to multyplier our balance.maybe atleast one year we will get our balance growth rapidly.personally i am prefer to sell and buy in several time than just holding.