This question has been asked many times, and it is like asking what will you do if you win lottery jackpot.
If you don't have 1 million dollars don't think what you will do with them. Think what will you do with money which you have at the moment to make that million dollars - and when you reach that goal you will know what to do with million $

Not really. If you get your million $ suddenly on your blockfolio after some massive rally, you just stay there with open mouth unable even to grasp that those numbers are in fact one million $. IF you cash it out in time, of course.
If you earn a million dollars and try to cash out them, you can earn yourself big problems. Tax organization of any country will come to you with questions and not only. The ability to handle such big money is not an easy task