How do we know spiritual satisfaction is achievable?

Spiritual satisfaction comes from being satisfied with what God finds satisfaction in—most notably the work of Christ. Isaiah 53 tells us that God is satisfied with the travail of His Son's soul. This assurance that God finds satisfaction in what Christ accomplished frees us from the burden of seeking validation through our deeds. As we understand and trust in Christ's completed work, we find contentment in viewing ourselves as holy and unblameable before God because of Him, as reflected in Colossians 1:22.