Help my unbelief

Matthew
Today, I read about the story of the father with a demon-possessed son.  He comes to Jesus and says that he had brought his son to the disciples, but they couldn't heal him.  In the Matthew version, he doesn't even ask Jesus outright to heal his son.  Then Jesus responds, pointing out that this man, and his generation, did not have enough faith.  In Mark's version, the man claims that he does believe in God's power, but requests help for his unbelief.
Either way, Jesus had done many miracles before this one, so there was precedence for having a belief that he could do such wonderful things, and yet the man didn't completely believe.  When we come to God and ask him to work in our lives, trust in his power and allow him to minister to you.  Don't hold out.