Obey and Ask: How to Be filled with the Spirit

If you believe that Jesus died for your sins and rose from the dead, you are a child of God.  And as a child of God, only two things are necessary for you to be permeated by God's Spirit and power.

OBEY GOD.
According to the Apostle Peter, "God gives the Spirit to those who obey Him."  And according to the Apostle Paul, we are actually commanded to "be filled with the Spirit" instead of "being drunk with wine."  So the first thing to do is simply, completely, and unconditionally yield to the Spirit, giving Him complete and absolute control over you.  That's what it means to "be filled with the Spirit."  That is the command to obey.  Once you've obeyed, you only need to do one more thing.

ASK GOD.
The Lord Jesus said, "If you, being evil, know how to give good gifts to your children, how much more will your heavenly father give the Holy Spirit to those who ask him."  So, if you are a child of God, and you've yielded to the Spirit, all you have to do is ask God to fill you with the Spirit, and He will do it.  Right now.

Obey God. (Yield to the Spirit.)
Ask God. (To fill you with the Spirit.)

That's all that's required to be filled with God's Spirit, if you are a child of God through faith in Jesus.