(((Sharo, I've already put in the paperwork to have you assigned to me as my personal assistant up there, provided that I pass away before you do. Brush up on your clerical skills; you're going to be quite BUSY!)))
Q "If you believe in afterlife; What do you plan to do when you get to Heaven/Hell?"
Perhaps it is only in this life that we have the choice of planning and doing. WE are in the driving seat here, using our free will to decide or plan what WE want to do and where. Perhaps in the afterlife we'll be in the passenger seat being taken to taste unimagined delights ----- or disasters.
According to the Bible, there is no literal hell fire so no one is going there. Immortality of the soul did not originate from the Bible. As far as those going to heaven, it's not up to us. Those that are going to heaven have a good idea of at least part of what they will do there. Most will inherit the earth and the Bible lets us know quite a bit about what we will do there as well.
(Romans 9:16) So, then, it depends, not on a person’s desire or on his effort, but on God, who has mercy. James 4:13-16