I do not believe s cyclicity. I think people invent their own cycles and follow them.
What to believe - the choice of each. However, there are facts. As in the previous cycle, after a year of falling prices for
BTC began to rise. Although this time the growth is too sharp. But, I believe, this will soon be compensated by a significant correction.
You can see the history of the price of Bitcoin from 2009 and there is a cyclicity. And it continues. After big grows there is a big fall.