Despite the empowering indwelling of the Holy Spirit, we allow inhibiters to limit the work of God through us. Fear of failure, lack of short term results, distractions, personal failings, and insecurity/pride all restrain the unlimited power of the Spirit in us. 

Acts 2:1-13, 1Corinthians 14:6-25, John 16:7-8, Ephesians 4:4-6, Ephesians 2:8-10, Ephesians 5:18