Blessed are those who dwell in your house,
they are ever praising you. Selah.
Blessed, in the Bible, can best be understood as happy. In fact, many times the hebrew word that is used here is translated as happy. Those who are dwelling with God are happy.
The question to ask is, where are you dwelling? There are many places that we can allow our minds and our hearts to dwell. Things like, in the past, or on ourselves and our needs and disappointments. We can make our dwelling place our own hurts many times, and dwell there for days on end. And when we choose these other dwelling places, we wonder to ourselves, "Where's the happiness?!?"
Choose your dwelling place today. Make it in God. Then you will be singing His praises because of how blessed you are.