Why are we here?
What is the meaning of life?
What is the only goal in life worth pursuing? The great seventeenth-century theologians who formulated the Westminster Catechism began their treatise by answering all of those questions in fifteen words.
Life is not about pleasing ourselves—we can’t, because our sinful appetites know no satisfaction.
Instead, the goal of our lives should be glorifying our Creator.
That is the purpose for which we were created.
And we’re confronted every day with the consequences of abandoning that calling, as the culture around us futilely pursues the sinful self-satisfaction it cannot attain.
True happiness is only possible when we lift our eyes off ourselves and pursue the glory of God.
The resounding testimony of Scripture is that God is glorious and infinitely worthy of our steadfast devotion.
As the psalmist Asaph wrote,
Whom have I in heaven but You? And besides You, I desire nothing on earth. My flesh and my heart may fail, but God is the strength of my heart and my portion forever. For, behold, those who are far from You will perish; You have destroyed all those who are unfaithful to You. But as for me, the nearness of God is my good; I have made the Lord God my refuge, that I may tell of all Your works. (Psalm 73:25–28)
The apostle Paul recognized God’s place as the glorious epicenter of the entire universe: “For from Him and through Him and to Him are all things. To Him be the glory forever” (Romans 11:36). Our response, therefore, should be to glorify God through every facet of our lives. “Whether, then, you eat or drink or whatever you do, do all to the glory of God” (1 Corinthians 10:31). Commenting on that verse, John MacArthur reminds us that
God is to be glorified. His glory is to be our life commitment. It is the purpose of our whole life, which now belongs to the Lord because we have been “bought with a price” (1 Corinthians 7:23). Not only when we eat or drink but in whatever we do we should do all to the glory of God. 
Scripture offers us many practical ways in which we can glorify God. John MacArthur points to several examples: the confession of sin (Joshua 7:19), trusting God (Romans 4:20), bearing spiritual fruit in our lives (John 15:8), giving thanks (Psalm 50:23), suffering for Christ (1 Peter 4:14–16), contentedness (Philippians 4:10–20), praying (John 14:13), and preaching (2 Thessalonians 3:1).  Everything we do and say should be for the sake of bringing God glory.
The highest purpose any individual can have is to be totally absorbed in the person of God, and to view all of life through eyes filled with His wonder and glory. That is the perspective of the true worshiper, the one who truly glorifies God. 
The goal of life is not personal happiness. But we shouldn’t ignore the second part of the answer to question one in the Westminster Catechism: “Man’s chief and highest end is to glorify God, and fully to enjoy Him forever” (emphasis added). In other words, the only true and lasting joy we can know on this side of heaven is the byproduct of glorifying God.
That is the only happiness worth pursuing and proclaiming.