It's January and now bitcoin has fallen to 35k, followed by altcoins. what my friend said at that time came true and his prediction came true. last December became an important point in determining the direction of the trend. the result is that at the moment the market can't hold on and continues to fall slowly. most likely we will start a bear trend. if i listened to it maybe i wouldn't worry too much about the current market situation. My current choice is only two, hold or cut lose.
I think what happened here is a two way thing, which could have happened that you turn out right or your friend turn out right, but unfortunately for you your friends speculation turned into reality, I don't think you should be unhappy with yourself or whatever because could have been you or him. I think what you should do now is to remedy the situation which is to hold till the bear market is over.
I guess what most people on this forum had speculated also will come into reality in next few weeks as there are enough possibilities for entire crypto space to bounce back into bullish mode. I know many times all speculation on bitcoin got delayed but never failed so far as per I have observed.