After studying countless NDE's, let me say the afterlife is more real than this physical life. The good news is that you're eternal. You will exist forever.
The horrific news, is that unless you focus on being kind and helpful to people in this world, you may end up in the hellish instead of heavenly afterlife.
In the hellish realms, you can go through sufferings and tortures beyond anything you can imagine in this world. And what makes it worse is that it can be eternal.
To avoid that realm and make it to the heavenly realms, be kind, loving, and helpful to as many as possible while you can in this Earthly realm.