Holding is only for those you can afford to take risks for the rainy day and as long as the earth remains challanges are part of human experience and as such so much would tempt one sell some coin.
There is always an attempt to sell the coins whenever the right opportunity comes into you. Maybe you need money in urgent and the only source of money you have in your hand is from your investment where you have been waiting for long time to actually withdraw it. It's part of human daily experience and I have been experiencing this for so many times.