Hey 
I once came across a time when I was unsure where the market is going to take us , thus I brought at a very high price , unfortunately the price came down as quickly as it climbed up.
The reason I believe I haven't lost even a single penny is because I believe you cannot loose when you don't encash.
Therefore I still believe holding for the long term can actually help you .
Yes, until no selling is done, there will be no loss yet there are still chances of earning/getting profit. As long as you hold any amount of bitcoin, its value may change as its price changes and that change will be the basis if you'll ever gain or loss. It will be better if you choose to hold than experience loss by selling your bitcoin in a price lower than the time you bought bitcoin. I once came across a time when I was unsure where the market is going to take us , thus I brought at a very high price , unfortunately the price came down as quickly as it climbed up.
The reason I believe I haven't lost even a single penny is because I believe you cannot loose when you don't encash.
Therefore I still believe holding for the long term can actually help you .