I dont know if we can call the opportunity we recieve in the spirit world a "second" chance. Either we accept the gospel or we dont. Whether we accept it in the spirit world or on earth there is no difference. The thing is, that the way we are here on earth is exactly how we will be in the afterlife. If we reject Christ here, we will reject Him there too. The only people that will change are those who never had the opportunity to accept the gospel on Earth.