if in 2019 will begin a fast rise in the price of bitcoin, then most likely I will sell bitcoin when it reaches 25-30 thousand and then wait for 10 thousand to buy it again
Probably, that theory might happen, as the All time lows of bitcoin is increasing per year, we can say, it might achieve a market price even huge compared to 2017 and 2018. Let's try to be more active and engage in crypto as it is our new primary currency.