Selling all your coins today is not a good decision because the price of bitcoins is down to $8k dollar and if you are not patient enough to wait then you will just lose a huge amount of profit because bitcoins is expected to reach $50k dollar before the year 2018 ends.
Expected by who?
Sounds like bullshit to me, 6 months for a $42k price spike based on what?
Nothing has fundamentally changed in
BTC to justify it so your just relying on several manipulated pump and dumps.