Heaven and hell do not exist in reality. They are the creation of your mind. But until you live in your mind, yes, these things di exist. Not only these things, in the world of mind, ghosts exist too.
And there are so many things seemingly exciting too — astral travel, mind reading, telepathy, Shaktipat, Kundalani awakening, there are so many topics that your mind can explore and become the master. But all these things still happen in the level of your mind.
Don’t aim to go to heaven. You have to come back to the Earth. Heaven is indeed a very nice place. You will feel very good. It looks very real but it is not. Because it is still a mind’s game. Don’t carry the mind with you when you die.
Aim to go to a place where you will become free. That place is beyond your mind. And that place is not so far.
You don’t have to wait ‘death’ to be liberated. If you are willing, you can be liberated right now. You are always free, you only ‘think’ that you are not. Stop thinking and you are free, here and now.