Greatest area where Faith is lacking

In reading the lesson for this week, a real good place for me to start I believe, would be the scripture in Hebrews 11:6. But without faith it is impossible to please him: for he that cometh to God must believe that he is, and that he is a rewarder of them that diligently seek him. Believers have to believe that God is who he says he is and to know his will. To know the word of God and the will of God without doubting, being fearful, and even coming up with your own perception. Believers have to trust God at his word the scripture in 2 Corinthians 5:7 says, For we walk by faith, not by sight. Too many times believers want to see things to believe it. In John 20:29 Jesus said to him, Because you have seen me you have believed; blessed are those who have not seen and yet have believed. The story here was after Jesus had rosed and met up with the disciple, Thomas was saying he didn't believe Mary when she told them, Jesus said tell them he will meet them he stated he won't believe until he sees the prints where the nails were and to put his hand in his side. Believers have to trust him and do the work he has for each person.