“Behold, you have become well; do not sin anymore, so that nothing worse happens to you.” (Jesus – John 5:14)
Once we have surrendered our lives to Jesus and asked for forgiveness, God is faithful in cleansing us from all sins and made us a new creation. Here Jesus is warning us that the moment we are tempted to go back to the world, back to our sinful life, we will be far worse than we were before. 
From my personal experience, I can say that nothing can match a life in Christ, making everything the world has to offer dim. So there is no reason to go back to our own ‘vomit’. 
A life in Christ is an all inclusive life, bringing blessings in every area of life, a life not based on the circumstance but based on everlasting promises made by a faithful God.