The Revelation of Jesus Christ clarifies how you get to "HEAVEN". That this is even possible was described by John in his gospel. John records Jesus' discussion with Nicodemus about the "new birth" (John 3:1-21). In verse 16, the desire of God is explained, "For God so loved the world that he gave his one and only Son, that whoever believes in him shall not perish but have eternal life." First event is that a person must "BELIEVE" in Jesus.
As a human, how do we "believe"? It must be a "thought process" using our brain. Our "brain" is encoded in the DNA formed at conception (Genesis 1:26-31). Development of the brain and spinal column happen some 6-8 weeks after conception. It is nothing for an infinite God to sample/collect these tiny neural transmissions into "OUR PERSONAL BOOKS".
The Books
The BOOK of LIFE
Everyone on earth at the time of conception has their "name" written in the Book of Life. Each person has a unique genetic code (DNA?). This BOOK of LIFE is a way to know about every person who has ever lived.
As we live our lives, the BOOK of LIFE keeps a record of persons deemed 'righteous'. Jesus says that a person deemed 'not righteous' will have their name "erased from the Book of Life" (Rev. 3:5).
In Revelation 21:1-8, we have a brief discussion about the "new heaven and new earth". This should be the desired destination for each person who is living on this OLD EARTH. The reasons a person WILL NOT get to this "new heaven and new earth" is implied in verse 8 (the SECOND DEATH).
OUR PERSONAL BOOKS
As much as we would like to think we have lived a 'clean, respectable life', what is recorded in "BOOKS", will determine our forever destination. This judgment occurs at the Great White throne (Rev. 20:11-12-15). Note: there is NO specific time for this judgment to occur. It could come shortly or immediately after the "First Death". Overcomers always must bo ready.
Every minute we are alive, we make entries into our "BOOKS" (via "brainwaves"?). Our lives, our beliefs, and our commitments determine our FUTURE RESIDENCE ('New Heaven' or 'the Lake of Fire')
OVERCOMERS
There is a class of people called "OVERCOMERs" found in the throne room of the "NEW heaven and NEW earth". Everything has been reset to "NEW". The OVERCOMERs inherit these NEW things. The Holy Trinity, God the Father, Jesus Christ the Son, and The Holy Spirit become the OVERCOMER's Family (Rev. 21:1-7).
Implied in the next verse, everyone who does NOT OVERCOME goes into "The Lake that burns with fire and brimstone", THE SECOND DEATH (spiritual and forever - Rev. 21:8).
HOW TO BECOME AN OVERCOMER
This is the easiest and hardest thing to do at the same time. You talk to Jesus and simply tell HIM that you LOVE HIM, and that you accept the cleansing of His Blood (Hebrews 9:11-14). You also COMMIT to NOT do the things listed in Rev. 21:8).
Then, share this COMMITMENT with all that you meet! That is YOUR TESTIMONY to the change Jesus has done in your physical and spiritual life. Welcome, OVERCOMER!