Help me overcome my unbelief

Mark 9:14-29
Jesus heals a boy possessed by am impure spirit.
They asked Jesus disciples to drive out the spirit, but they could not.
Jesus said "You unbelieving generation, how long shall I stay with you? How long shall I put up with you?"
Everything is possible for one who believes. Immediately the boy's father exclaimed,"I do believe; help me overcome my unbelief!"
Jesus rebuked the impure spirit, the spirit shrieked, convulsed him violently and came out. After Jesus had gone indoors, his disciples asked him privately, Why couldn't we drive it out?" He replied, "This kind can come out only by prayer."
The symptoms(症狀) described here, attributed to an evil spirit by Jesus' contemporaries, sound like a case of epilepsy(癲癇) (which modern medicine can treat but not cure). The disciples fail because of their lack of faith.
Yet Jesus does not turn the child away because his father's faith is limited, In line with the beliefs of the time. Jesus commands the spirit to leave the boy, and he is healed. The key to success is prayer and fasting.
Why?
Everything is possible for one who believes. It is hard to most of us, but Jesus encourage Christian and those who know Jesus but does not believe in Him. Even the believe may pray to Jesus help us overcome my unbelief.
Driver an impure spirit needs prayer and fasting. It is test our believe. It is not us has power to drive devil out but through the name of Jesus.
Is it possible to be filled with faith and doubt at the same time? Yes! You can have faith that God wants you to do something and still be scared to death. But that’s OK, because God lets you begin with the faith you already have. It may be just a little, but that’s all you need to start.
What are some areas of your life where you trust that God is at work? What are some areas of your life where you’re struggling with doubt, wondering if God is really helping you? Your knees may be shaking, but you just have to put one foot in front of the other. Keep moving forward!
How?
Pray to the Lord and keep moving forward! Eveb we have a little faith, but that's all we need to start.