Dont sell everything,just sell if its important. Or just sell half of all your bitcoin and the other half will be use in the near future.
even selling half of the coins that you have is a lot. when i secure profits, i stick to selling 5-10% of my coins to secure profits. it will allow me to benefit from an higher going price at the time there is a rally going on. it feels bad when you have sold all your coins and the price goes up much higher than the level where you sold your coins at. just avoid yourself from being in such a position.