There is a God who if you “be good” he will help you feel good = Moralistic Therapeutic Deism NOT the Christian Gospel.
Instead Christianity says
There is a God, who seeing the evil of mankind, sent his own Son, Jesus, as a man to suffer and die in their place so that all who are willing to abandon their own goodness and bank their lives on the goodness of God, will obtain a great treasure – Jesus Christ himself.
This does not mean that life will be easy or you will feel good all the time. What it does mean is that nothing in this world – terrorism, poverty, divorce, loneliness, suffering, even death itself – is able to separate you from the love of God.