Happiness Level Two – Love of Self
The Lord has placed within us an instinctive self-love. This is unlike the love for God and our neighbor which we actively choose. Rather, self-love comes to us very easily, in the earliest days of our lives. Like all of our loves, self-love is healthy when enlightened and ordered by our heavenly Father, who alone knows and loves each one of us perfectly.
Well ordered self-love is right and natural.
– St. Thomas Aquinas