The only thing of this world that will determine if you reach Heaven is the decision you make on following Christ, the Word and if you have taken the steps outlined in the Gospels; Hear, Believe, Repent, be Baptized and add to the Church. Your treasures are where your heart is....
The thing about the “Prosperity Gospel” is that it concentrates on the “here and now” ... namely how things work out for you IN THIS LIFE and not in the life to come.
So, these are really two different things. You can have those of the Prosperity Gospel belief, who ARE SAVED and will be in Heaven. Their understanding of the Prosperity Gospel will not nullify or cancel their personal salvation in Christ, even if they are all wrong about the Prosperity Gospel.
The “Prosperity Gospel” is not about how to be saved in Christ ... rather ... it’s about how those who ARE SAVED IN CHRIST can have an ABUNDANT LIFE here and now on this earth.