In The Whole Works of the Right Rev. Jeremy Taylor, he writes:
Every true penitential sorrow is rather natural than solemn; that is, it is the product of our internal apprehensions, rather than outward order and command. He that repents only by solemnity, at a certain period, by the expectation of tomorrow’s sun, may indeed act a sorrow, but cannot be sure that he shall then be sorrowful. Other acts of repentance may be done in their proper period, by order and command, upon set days, and indicted solemnities; such as is, fasting and prayer, and alms, and confession, and disciplines, and all the instances of humiliation: but sorrow is not to be reckoned in this account, unless it dwells there before. When there is a natural abiding sorrow for our sins, any public day of humiliation can bring it forth, and put it into activity; but when a sinner is gay and intemperately merry upon Shrove-tuesday, and resolves to mourn upon Ash-wednesday; his sorrow hath in it more of the theatre than the temple, and is not at all to be relied upon by him that resolves to take severe accounts of himself.