Psa 23:1-6 It's important to focus on the Shepard and His guidance."He leads me besides the still waters" -- Joh 14:27 Jesus has given us peace; Rom 5:1 we have peace with God (He's our Father; we are reconciled); we can find the "peace of God (Phi 4:6-7); we're lead to and by the Holy Spirit (Joh 4:14 - He'll comfort us; Joh 7:37-39 - we're promised the rivers of living waters). "He restores my soul" : restore means healing like setting a broken bone; this applies to our soul (Psa 51:1-19, Psa 103:1-5) He forgives (1Jo 1:9, Gal 6:1-2), heals, redeems us from distruction, crowns us, and satisfies us (Psa 103:1-5). He cleanses us (Eph 5:26, 1Jo 1:7, Joh 13:10-15). He restores us because the gifts are not changeable (Rom 11:29), and because nothing can separate us from His Love (Rom 8:39); He prays for us. "He leads me in the paths of righteousness for His namesake" -- 'namesake' is His glory. He leads us in righteousness six ways: (1) by His Truth (Joh 14:17, Joh 14:26, Joh 16:13); (2) to bear fruit (3); makes us to be salt and light (Mat 5:13-16); salt preserves; light shows the way; (4) to walk in His Spirit (Gal 5:16, 1Jo 1:7); (5) to faith and obedience (2Co 5:7, Eph 2:10, Eph 4:1, Rom 8:29); (6) to suffer for His namesake (1Pe 1:5-7). Melted gold makes impurities come to the top so the dross to be removed (1Pe 4:12-14, Isa 43:7) We will share His glory; that's His purpose.
The Divine Mentor is God the Holy Spirit. God answered Jesus' prayer to provide us the Spirit not just to be with us but in us -- to pray with us labor with us to guide us teach us and equip us -- the goal being that we'd be prepared for the troubled times in which we live.