How much instability there is (Saint John of Kronstadt)

The heart’s unstable. It can change many times in a moment. It can turn towards good or evil, faith or unbelief, simplicity or complications, love or hate, kindness or envy, generosity or meanness, chastity or adultery. How much inconsistency there is, how many dangers surround us. How careful and self-restrained we have to be.