A response to Christ can often be an emotional moment, but to sustain over a life, it needs more than just emotion. It needs to be a whole life commitment, one where you consider everything -- the cost of making Christ the central part of life, as well as everything that must be given up. This is not a small decision -- it sets a course for eternity. Jesus says that we should be prepared to renounce everything, but the interesting piece is that nothing we renounce has eternal value -- what we receive is of infinitely more value and will endure forever.
Jesus wants honest commitment. He wants to ensure that when we make heartfelt commitments, we mean them, and that we're prepared to let God lead us for our entire lives. This is a prayer every day -- to ask the Holy Spirit to lead us, to renew our hearts each morning. God's mercies are new every day, and it takes the leadership of God to follow God like this every day, to train our hearts to love God more than anything else, to notice when other loves are competing for our hearts and distracting us away from God.