Lent is about repentance. Valuing Christ and His love so much that we die to sin and live unto righteousness. The Heidelberg Catechism helps.
Q. What is the true repentance or conversion of man?
A. It is the dying of the old nature and the coming to life of the new.[1]
[1] Rom. 6:1-11; I Cor. 5:7; II Cor. 5:17; Eph. 4:22-24; Col. 3:5-10.
89. Q. What is the dying of the old nature?
A. It is to grieve with heartfelt sorrow that we have offended God by our sin, and more and more to hate it and flee from it.[1]
[1] Ps. 51:3, 4, 17; Joel 2:12, 13; Rom. 8:12, 13; II Cor. 7:10.
90. Q. What is the coming to life of the new nature?
A. It is a heartfelt joy in God through Christ,[1] and a love and delight to live according to the will of God in all good works.[2]
[1] Ps. 51:8, 12; Is. 57:15; Rom. 5:1; 14:17. [2] Rom. 6:10, 11; Gal. 2:20.
A. Only those which are done out of true faith,[1] in accordance with the law of God,[2] and to His glory,[3] and not those based on our own opinion or on precepts of men.[4]
[1] Joh. 15:5; Rom. 14:23; Heb. 11:6. [2] Lev. 18:4; I Sam. 15:22; Eph. 2:10. [3] I Cor. 10:31. [4] Deut. 12:32; Is. 29:13; Ezek. 20:18, 19; Matt. 15:7-9.