PSALM 4:8 I will both lay me down in peace, and sleep:

Evangelical repentance, on the contrary, is a lasting principle. The true penitent loathes and condemns himself daily. Every day he laments and abhors all the evils which he discovers both in his heart and in his life. He does not forget his former sins, nor become unconcerned about them, as soon as he attains peace of conscience and a joyful hope of his reconciliation to God. But the clearer his evidences of the Divine favour are, the more does he loathe and condemn himself for his iniquities, the more vile in his own sight does he appear, and the more aggravated and odious do his past sins appear to him. The faith and sense of pardoning mercy made Paul appear in his own eyes the chief of sinners. The true penitent continues not only to mourn and to abhor himself for his past abominations, but he always finds new cause for the exercise of repentance. He finds daily so much unbelief, legality, and earthly-mindedness in his heart; so much deadness, formality, and hypocrisy in his duties; and so much prevalence of evil inclinations, vain thoughts, inordinate affections, and of the sin which so easily besets him, that he cannot, while he is in this tabernacle, but groan being burdened. Repentance, therefore, is the constant exercise of the true Christian as long as he is in this world. He will not leave off repenting till he perfectly leaves off sinning. He carries the exercise of repentance about with him as long as he carries about the body of sin.  Sin follows him whilst he is fleeing from it; often it overtakes him, and therefore he must often renew his flight. For conscience' sake he will forgo temporal advantages, and break through the ties even of sweetest friendship and of nearest kindred, sooner than be drawn back by either into his former neglect of duty. He will maintain a godly jealousy over all persons and things connected with him, lest any of them prove a hindrance to him in his course of new obedience.   Colquhoun