I would like to differentiate between what I see as easy believism and true biblical faith.
Many things, such as healing, are NOT easy to believe for, since we are so well trained to believe what is in the natural. To most, that is more true than a promise in the word of God.
Have you ever heard someone say, "I thought God was going to heal me,but ..." and the reasons why God didn't heal them vary. Some of the reasons are, it wasn't His will or He said, no, or not right now,or He's trying to teach you something, or He's testing your faith and so on.
What about the person who says,"So and so was the most Godly, holy, and faithful prayer warrior that I ever knew, and when they got sick or had a wasting disease,and they prayed for God to heal them and God didn't heal them. If anyone had faith for their healing it would have been them."?
Did they really?
What about the guy who asked Jesus if He could help him with his son,which caused him to have epileptic seizures and mental problems? When Jesus said, "If thou canst believe, all things are possible to him that believeth."
And the father said something I would say fits most who say they believed but did not.
Mar 9:24 And straightway the father of the child cried out, and said with tears, Lord, I believe; help thou mine unbelief.
Why would the father tell Jesus to help his unbelief or doubt?
How can a person both believe and doubt at the same time?
Did the father of the boy have faith for his son to be delivered, without wavering or without any doubts? I ask because James says, "And let not that person THINK that they should receive ANYTHING of the lord."
The answer is an obvious and resounding, NO. But God is merciful, and because of Jesus' faith, the boy was delivered.