I think holding a bitcoin for a long time is a good thing cause the value of bitcoin keeps on getting high just think about this when bitcoin made its first appearance the worth of 1Bitcoin is 0.08$ look how much its price grow from its appearanve
Holding bitcoin is obviously good idea to earn money.You just need to wait for the correct time to buy and sell.for example I bought 3btc when bitcoin price was under 400$ and now it's 770$+.So you just need to be patient and wait for the correct time.
so you are telling me that you made a $1000 profit by holding your coins for a very long time i would say it is not a good move,first off you are not getting much of a profit here by holding three bitcoins and if you had a higher number of coins then i can accept its a good move but if i am in that position i would have booked my profits with every rise and would buy back with every drop and that way i would earn more.