Almost everyone now has a success story regarding when and how they bought Bitcoin when the price was low, and now that the price has pumped, it's now a big win for them.
Just as it's discussed on this thread:
How do you feel when someone tells their success story about Bitcoin? I have some friends who used to criticize this bitcoin a lot. They were saying that the price of Bitcoin would never go up. Gradually the price will fall further. But I did not give up hope. I was so patient that the price of Bitcoin would go up I knew. And researched Bitcoin.
I am happy for your decision to hold and prove to your proclaimed friend that the price will do well in the near future, which it did, but you also forgot to let them know why, arguing that even if the price goes down as they predict, as a true Bitcoin believer, you will never give up on it until you achieve your dream price.