This is the reason why Bitcoin crashed so hard last November. Basically everybody assumed that "November" and "December" are usually bullish months and they went all out and overleveraged themselves and this is what caused that massive crash.
What, with our sample size of 10 years? LOL, that assumption was bound to fail. 2011 and 2014 are two prime examples where that bet failed too. And no surprise, those came after a huge bubble just like 2017.
Right now we can only hope that $4200 area gets engulfed and we close above it on the weekly candle and then we hope that it won't crash under it. If we get this, then this will be the first time since the ATH since we get a weekly close above a previous pivot.
I'll still be approaching it with caution even if we do get a weekly close above. With how slow this market moves now, I think a resolution like November 2014 would still be possible.