The great comfort a believer has is the knowledge that the pain of this life is only for a time, but that eternity is forever. Jesus promised us a place where there is no more suffering, no loss, no hopelessness. A few persons have been granted to see heaven and tell us what they saw.
These messages have been vetted and any that had even the slightest hint of a false "New Age" experience have been eliminated.
Not everyone goes to heaven. Hell is just as real.