Authority of the Believer

In Matthew 28, Jesus was given all authority in heaven and on earth. In that same passage, He passed the baton of authority on to us as believers. All of us as believers should be walking in Jesus' authority. When the disciples couldn't cast out a demon in Mark 9, Jesus called them an unbelieving and perverse generation. Could it be that Jesus' frustration towards us comes from our lack in doing the same things He did when He walked on the earth?