"“What do you mean, ‘If I can’?” Jesus asked. “Anything is possible if a person believes.”" (Mark 9:23 NLT)
"Jesus said unto him, If thou canst believe, all things are possible to him that believeth." (Mark 9:23 KJV)
Christ's statement here does not mean that can automatically obtain anything we want if we just think positively. but this is a statement that once again buttresses the power, ability and willingness of God to overcome the obstacles in our lives when we put our trust and faith in Him. By faith, we can have EVERYTHING we need to serve God!