Self-love is something that you pick up and learn yourself through watching someone else showing love and compassion and interest in another person.
What I've been pointing at is a radicalization of self-love where the main focus of loving yourself is to be focusing on yourself and showing yourself love. Part of that is accepting who you are and accepting the flaws that you have. For example, if you're fat because of an eating disorder, you embrace body positivity as a means of normalizing that you are fat and that your eating disorder is completely normal. You don't bother about making changes because you love who you are right now.
As soon as you work on losing weight you're breaking - at least - those virtues of self-love.
Healthy self-love is how you describe it, loving yourself now, looking at your flaws and working on them. Some of us just know that by instinct and we've been wired to think that. We've had good teachers that conveyed that.
Radicalized self-love is accepting the way things are and not changing it. Instead of dealing with anxiety, go and have a nice relaxing bath. Instead of working through depression, go and throw a slumber party and never talk about your mental stability. Instead of working on your health, eat more of that comfort food.