A true conversion experience is a change of heart and without a change of heart there is not true conversion. I have often said that I am glad when my nieces and nephews struggle with their salvation because I don't want them to just inherit it, I want them to own it. This is the same thing in my mind.
True conversion is life-changing. It isn't simply knowing that you're going to heaven. It must involve a radical shift in your thinking and a new understanding of how you are loved and how to love others. If our Christianity has never affected our lives in this way, then each of us individually needs to revisit our conversion.