To love yourself is to value yourself more, take care of your body and mind, spend all your energy on meaningful things and spend all your time on useful things. The definition of wind and water is that when the wind blows over the water, water will make waves and describe things as lively and prosperous.
This sentence is a self-encouraging sentence, telling people that they must learn to love themselves more. Only in this way can their spirits be satisfied and their lives become happy.