But you shall receive power (ability, efficiency, and might) when the Holy Spirit has come upon you, and you shall be My witnesses in Jerusalem and all Judea and Samaria and to the ends (the very bounds) of the earth. —Acts 1:8
It is possible to fill a glass with water without filling it to full capacity. Likewise, when you are born again you have the Holy Spirit in you, but you may not yet be totally filled with the Spirit. Many Christians are very busy doing things for God but don’t have enough power in their lives to be what God wants us to be.
Going through the motions and following religious formulas is a waste of time. You must have the revelation that Jesus is alive within you and allow Him to change you and make you a new creature in Christ. Don’t tuck God away for emergencies and Sunday mornings. Allow Him to work freely in every area of your life through the power of the Holy Spirit.