"For whoever would save his life will lose it, but whoever loses his life for my sake will find it."
When we lose our lives to Jesus there is a tearing apart of self, of our prideful sinful anture, of doing waht we want and having our own way. You say yes Lord I will give you all that I have but there is a purification still because we may even have to let go of our idea of how we will give up our lives for Christ.
We may think that Jesus is calling us to religious life, priesthood, marriage but we have to let go of even those ideas because in one way or another the Good Shepherd will guide, or drag us, to where He wants us. He will call us to give more than we are comfortable giving. We will be asked to give up all that is near and dear until all that is left is Him.