Every true believer HAS the Holy Spirit (Rom 8:9), but not every believer is FILLED with the Holy Spirit. The Bible commands us in Ephesians 5:18 to BE FILLED with the Spirit. That command is not just a onetime event; it is to be ongoing. We are to keep being filled with the Holy Spirit.
There are several requirements to prepare your heart to be filled with the Spirit.
Put CHRIST (instead of yourself) at the center of your life.
Passionately pursue Jesus and HIS agenda rather than your own interests and ambitions.
Know UP FRONT the true cost of following Jesus.
Jesus told a teacher of the law, "Foxes have dens and birds have nests but the Son of Man has no place to lay his head" (Matthew 8:20). Following Jesus may require living with little or nothing, having substandard shelter or no shelter at all. Are you ready to be THAT devoted to Jesus?
Jesus told a rich man, “Go sell everything you have and give to the poor, and you will have treasure in heaven. Then come, follow Me." Jesus exposed the idol in the rich man's heart. He went away sad, because he had great wealth, and it appears he was not prepared to part with it.
The Bible NEVER says it's wrong to be wealthy. It’s the LOVE of money that is wrong (I Timothy 6:9).
Hold your money and possessions with an open hand.
If pleasing your family or anyone else is more important to you than honoring, pleasing and obeying God, you can't be Jesus’ disciple. (See Luke 14:26.)
If you are too proud to admit before others that you even know Jesus because you are concerned they will reject you, then you are not a genuine follower of Jesus, and He won't acknowledge you before His Father in heaven. (See Matthew 10:32.)
Jesus said whoever lives for comfort and the good life will lose his very soul and miss the very purpose for which he was created. (See Luke 9:23.)
After hearing hard teachings of Jesus like this, “many of his disciples turned back and no longer followed him" (John 6:66).
The basic problem the rich man had is He wanted Christ as His SERVANT but not His MASTER. He wanted Christ to meet his need (for eternal life) but not to tell him how to live his life.
Commit to a radical a relationship with Jesus.
Salvation, though totally free, is costly. Through your friendship with Jesus, your life will be transformed, you will become more like HIM, and you will be given a purpose that is worth living and dying for. Jesus wants ALL of you; He simply won't settle for anything less.
Give Jesus exclusive rights as Lord and King of your life to the exclusion of everyone and everything else, even legitimate and good things. When you pray and invite Jesus into your life, He promises to never leave you or forsake you; and you are committing to grow closer to Him, to know Him more, love Him more, and to follow Him. Commit to believe what Jesus says. And commit to obey what He says.
NOT everyone WANTS TO or is prepared TO DO what is required to live in the fullness of the Spirit. Sadly, many people are pursuing the temporary things of life rather than pursuing Christ. Their spiritual gifts and talents are often unused, and the fruit of the Spirit is not very apparent in their lives.
If you want to know God and experience all He has ordained for you, then give Him ALL of you.