Bitcoin (sell or hold??)

I am really very confused that should we sell or hold the bitcoin.
Will the overall value of bitcoin and bitcoin gold be equal to today's market value or not?
Is bitcoin gold better than bitcoin or not?
I have heard that mining of bitcoin gold is easier than Bitcoin.
So it is quite preferable for miners but this is not the only factor.
So pour you real advice and help me and other blackhat members to come out of this big confusion.