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That December 2017 was insane, and I can still remember the brink of that price that everyone waited for. I didn't manage to sell a bit because I was not able to do it as I was still new to crypto and not much options are available for me to sell. 
For your question, well we're still not sure if Bitcoin will go more than 1k higher again. The price is kind of bouncing around the room right now so unless we get back to 60k soon, then there is not much to talk about actually, OP.
The increase in Bitcoin at the end of 2017 was the most memorable for me, because that incident really surprised me, because I didn't think Bitcoin
would go that high. And it turns out that this year Bitcoin made a much crazier surprise, imagine for the first time Bitcoin managed to touch the price
above $ 60k. This is what made me finally think positive, that there is a possibility that Bitcoin can still go higher. Although as you said Bitcoin must
first return to the price of $ 60k to ensure the end of this year can increase. But if we look at the movement of Bitcoin for the past few days it has started
to rise and even touched the $40k resistance price, if Bitcoin can rise above $ 40k in the next few days it looks like the opportunity for Bitcoin to return
to the price of $ 60k is wide open.