Power & Authority

As I was reading in Luke 4 this morning I kept seeing how the people were amazed that Jesus spoke with authority and power.  Not only that but he healed and drove out demons because he had authority and power.  What I felt the Holy Spirit telling me was that I have that same power and authority at my disposal.  Not because I'm special or gifted but because I have the Holy Spirit in me.  So, do I really minister in Jesus' authority and power?  Probably not like I should.  Have I driven out a demon?  No, but my dad has numerous times.  Have I seen someone healed when I prayed and laid hands on them?  Yes, a few times.  But I wonder how much more God could do if I just had faith.