GOODHODL.
What we really need to avoid is to sell at loss since this is the dumbest decision we provably do.
I did this once and it was as a result of panicking that made me do it. It I couldn't even live with myself for making such a dumb move. I lost so much that I knew that it will take me some time to recover what I had lost as a result of that mistake.
This is why I tell beginners that the market will test your resolve and if you had invested the money that you couldn't afford to lose, you will lose it twice if your inpatience forces you to sell in a hurry because of the market fluctuations.