Is there life after death?

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A good friend of mine sent me a book about a woman that wrote about how her near death experience (NDE) changed her belief in God and heaven. She claimed to have visited the "spirit world" after attempting suicide and while paramedics were reviving her. I'm not religious but spiritually believe in a higher power. I still have doubts about there being an afterlife. My question to you, is there life after death?