My advice is don't spend on superfluous things, and buy things you need, want really bad and that you will use, because your will probably not getting that bitcoin back. So spend on things that have a good impact in your life, for me I could spend some in a down-payment to buy a house and not much more. I would not spend on travels, vacations or cars. Even though i think it's ok to indulge yourself a little as long as is not a big part of your stack. In my mind I have a stack that I will never sell at least until I am retired. And another part that i am ok selling if it becomes a nice value and if there is something I need to buy.