"For to me, to live is Christ and to die is gain.” (Philippians 1:21)
"In the logic of the gospel, there are no alternatives to Christ. Every other option is no option at all. When everything considered valuable in life is seen to be nothing in comparison to the glory of Christ, you learn rather well that Christ alone is worthy of an entire life's affections and devotions. He is worthy of so much more, in fact, which is why Paul completes his declaration 'to live is Christ' this way: 'to die is gain.'"
- Matt Chandler, To Live Is Christ, To Die Is Gain (Colorado Springs, CO: David C. Cook, 2013) 36-37
I would encourage you to read Dr. John Piper’s book, Desiring God, for a soul-stirring approach to living for God (available as a free download at www.desiringgod.org).