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
Quite possible to happen in 2019 I guess? Because if you see a yearly ATH, you might not be sure about how high will bitcoin can reach, but if you see the ATL all time low per year, you can see the support is getting stronger as it pave its way uptrend.