"Be filled with the Spirit"

Here's what Graham Cole, of Trinity Evangelical Divinity School, says that means.  (From Justin Taylor's blog)

We are commanded to “be filled with the Spirit” (Eph. 5:18). How do we do that?
A great question!
The first thing to notice is that Ephesians 5:18 is addressed to a congregation.
Next, it may be translated “Be filled by the Spirit!” In fact, in context Paul is contrasting the sort of behaviors you see in a pagan assembly (e.g., drunkenness) and what is to characterize a Christian one (e.g., making melody in your [plural] heart [singular] to the Lord and submitting to one another out of reverence for Christ).
In my view, it is not about power for service for the individual. We obey this command when our Christian meeting is filled by the Spirit with these kinds of practices. Then we truly are the temple of the Holy Spirit that Paul speaks of in Ephesians 2.
However, Paul specifies no steps. So what’s the way forward? I suggest Acts 4 provides a paradigm case. These early Christians gathered in the face of persecution and prayed for boldness to proclaim the gospel. Interestingly they did not pray to be filled with the Spirit. And what did God do? He filled them with the Spirit and they spoke boldly indeed. So I would counsel if you want to be filled with the Spirit, set your heart and life prayerfully on the next step of Christian faith and obedience and you will be filled with the Spirit.
Back to Ephesians 5. When we as a congregation prayerfully fill our meeting with the practices set out in Ephesians 5:19-21 we can trust that our assembly really is the temple of the Spirit. In these practices the focus shifts from me to the Lord, and my brothers and sisters.