You may be right, Monero used to have December lows, then a spring renaissance.  With Bitcoin ripping away it is hard to predict anything, other than that will of course be another run up.   I am sure we will see the USD ATH smashed once again in this cycle.   

Let's see what pans out, you have been right so far.  I did sell a chunk in 2017 - but I have only sold to scalp back more coins since it all cooled down in 2018, I am now happy to wait until the rally to come.