We are to love God with all our heart, with all our soul, and with all our mind. If we truly believe that Christ is our Lord and our God, we have no choice but also to believe in him with all our heart, with all our soul, and with all our mind. What's tragic is that many Christians do not take God seriously enough; they believe in him rather casually, not much better than being lukewarm. If one does not know God well yet, tell him to love God more, to believe in him more, or to be holier will not work. They must understand that only God can make all these things happen. Therefore, teach or advise them to abandon themselves to God first and he will make all things easy for them. This is absolutely truly. I'll again say: save your energy and let God do the work for you.