As you see since the bitcoin is started the market value goes high and higher so definitely when you hold a bitcoin now the price will go up next year. Many are success in holding a bitcoin. So i wish that we will success too. Because bitcoin is the best digital currency so expect high for bitcoin.
Yes I also think so that holding bitcoin for a long time is a good decision as I also use the same strategy and hold my bitcoin for a long time.
But I think it also depend on your investment, as if you are holding a big amount of bitcoin for a long time then it can be profitable but if you are investing a small amount then it will not be such a good idea as it will be just the vestige of time.