Self-Love ? ... in Light and Dark

I was going through some deeper experiences in self-love the past few years. Today I watched the video posted at the bottom and thought of a friend of mine, who consistently said they didn't understand this "self love" everyone was always talking about. Frankly, I didn't understand why, and attempted many times to explain that it was meeting our needs on all levels and all kinds of self-care, from:

Physical: eating right, sleeping enough, drinking enough water, exercising, relaxation, etc.

Emotional: listening to the feelings that arise (good and difficult ones) so the challenging ones don't get stuck in the body creating a physical challenge and the good feelings really sink in (are received) ; saying nice things to ourselves; removing old emotional patterns and programs that no longer work, etc.

Mental: removing mental programs and patterns that also aren't effective; thinking good thoughts about ourselves and our lives, the world, others; studying things we enjoy ~ therefore expanding our knowledge about the physical world; etc.

Spiritual: meditating ~ deep breathing ~ or whatever method allows us to create connection with our Higher Self / Soul and other beings around that love, protect, and care for us; listening to our intuition; energetic exercise and boundary; etc.

If we don't love ourselves, we can't truly love another. What would we give? Some hollow or fake version of love? Even the airlines know you have to pull your own oxygen mask down before assisting others. So, beyond all the ways to love the whole of ourselves, let's talk about a deeper level of love.