Conversion is a work of God!

“Conversion is a work above man's power. We are 'born, not of blood, nor of the will of the flesh, nor of the will of man, but of God' (John 1:13). Never think you can convert yourself. If ever you would be savingly converted, you must despair of doing it in your own strength. It is a resurrection from the dead (Ephesians 2:1), a new creation (Galatians 6:15; Ephesians 2:10), a work of absolute omnipotence (Ephesians 1:19). Are not these out of the reach of human power? ... This is a supernatural work ... 'Not by works of righteousness which we have done, but of mercy he saved us' ... 'Of his own will he begat us' (James 1:18). We are chosen and called unto sanctification, not for it (Ephesians 1:4). God finds nothing in man to turn His heart, but enough to turn His stomach; He finds enough to provoke His loathing, but nothing to excite His love. Look back upon yourself, O Christian! Reflect upon your swinish nature, your filthy swill, your once beloved mire (2 Peter 2). Behold your slime and corruption ... How then should holiness and purity love you? ... Who but must needs cry, Grace! Grace! ... What but free grace could move God to love you.”

Joseph Alleine, "A Sure Guide to Heaven"