Holding Bitcoin is the safest form of investing in terms of crypto related investments. Best thing is that it requires no effort at all, plus you hold everything yourself (assuming you locked away your coins in form of cold storage). Many people fail to realize that when the price goes down, they haven't lost anything. It's very easy -- you only gain or lose when you start selling your coins. As long as you don't sell anything, your investment remains the same. But that's of course not how people look at things.
If you are a very low patience type of person, holding is not the safest form of investing. Just like what is happening now, a lot of panic sellers are coming out again and if you did hold when the price is still at $1,200 and you didn't sold some of it then you are going to feel sorry just like me. Though I can still wait for the price to pump.