“To live is Christ” means there is no greater joy than to be loved and to love. To be elevated so high by the love of the Father, that it frees you to lower yourself for the sake of others. And thus live as the friends of Christ.
“To live is Christ” means God himself is our joy and pleasure. Not his “blessings” for good behavior. But his presence by his grace. The indwelling presence of God in Christ as our path of life. This is far more than just avoiding death. This is abundant life. This is forever Love.
“To live is Christ” has brought us into the joy of the LORD. Yes, weep over your sin, this is right and good. But then rejoice over your Savior, for he rejoices over you. Let your mourning be turned to dancing and your sorrow to gladness. Let your cross become your resurrection. Let the imputed holiness of Christ cause you to delight in him. Let his grace make you happy (it’s okay, you’re allowed), and find your strength in the joy of the Lord.