Psalm 16:11 (NKJV)
The 'path of life' is only found in the presence of the Lord (symbolized by the garden of Eden) - only by partaking of the tree of life (wisdom of God) can we remain in this place. His Will is often linked with 'pleasure' (eg. Philippians 2:13: "For it is God who works in you both to will and to do for His good pleasure" and Ephesians 1:5).