Lets take the following example. You buy BTC at 6k and it goes up to 8K. Do you sell 100% of it or do you sell 75% and keep 25% in BTC.
What are your opinions / tactics?
In the particular example that you are giving I will not sell my bitcoin at that price, I do not know about you but I'm not here in this market to obtain small profits, I'm here to obtain life changing profits and if that means that I need to hold my coins for years or even decades I'm willing to do it.