Spirit Filled Life
John 7:37-39.

The Feast of Tabernacles. God's provision for His people in the desert - Deut.16:13-15. Ritual on the last day. the High Priest poured water in front of the Temple Gate, a ritual that offered no life or flow of the Holy Spirit in the midst of God's people.
Jesus stood up and drew attention to Himself, the source of Living Waters. 'If anyone believes in Me....'. the invitation for a
spirit filled life. 
John makes it clear here that the river cannot flow without the
agency of the Holy Spirit. He is the one to release that river.
What is the river? The Word od God.
In the Old Testament, the Holy Spirit was restricted to a few selected people, because no perfect vehicle was found to express
Himself. The promise therefore was left for someone to be found on earth able to fully reveal the Holy Spirit's attributes to everyone.
Christ, through the sacrifice on the Cross fulfilled the Promise-
'for the the Holy Spirit was not yet given'.
John came preaching Salvation but something more was needed. The gap created by sin had to be bridged. before the Holy Spirit could come in full power. Christ had to be glorified also as Sovereign through the Ascension, then it became possible for the supplies to be returned to Heaven in order to present to the Father the efficacy of Redemption.
This was done 10 days later at Pentecost. The action came from God, nothing from man, Christ is the only source of God's supplies to us. It is the H.S. that releases in us whatever we have of God.
'If any man thirst...'. A clear invitation to be filled.

Spirit filled life
The Christian Faith is a Religion of the Spirit and unless we are continually filled with the Spirit's resources our lives will be largely ineffective and unproductive.
The Word of God gives us Two Commands concerning this issue:

1. Eph.5:18 tells us we should ensure that we are always filled with the Spirit of God.
We can only be filled if we allow the Spirit to fill us. Water always finds its own level, and so does the Spirit. The parallelism in this verse portrays someone who gets drunk. If you are drunk you are under the control of alcohol. A person filled with the Spirit is under the Spirit's control. Jesus of  Nazareth was filled with the Holy Spirit and 'went about doing good'. 
The filling is a must before Christian service. The Apostles were baptized and filled before their world-wide ministry. Compare their lives before and after the filling. Jesus said 'the wind
blows where....'. So is the person who is directed and controlled by the Holy Spirit.

2. 1 Thess.5:19, concerns the loss of the Spirit's filling.
How do we quench the filling?
Picture the filling like a spring of water that flows out. To stop the flow we have to block the spring.
Quite often this is not done on purpose but unintentionally. We can block the spring and the
flow in many ways. Even a clean obstacle can stop the flow. Quite often we bottle up the activity of the Spirit by not using His functions, gifts, etc. We can also block the activity of the Spirit by not taking heed to His promptings or impulses. The method of worship can equally quench Him. The Holy Spirit does not work in our lives by force.