Do you think self-love is an abstract concept? No, it is a practice.
Self-love is an entirely concrete action that we do or do not do.
Love for yourself is to notice that you are tired and allow yourself time to rest. It means not going to a meeting you don't want to go to.
Love for yourself is to stop seeking the attention of someone who does not pay it to you. It is to say no to what does not suit you.
Self-love is to take a break and take your time to drink a cup of delicious coffee or whatever you prefer. This is to choose not only useful books but also interesting ones.
Self-love is to spend a little more money and call the master, instead of killing half a day to repair something at home. This is to ask for help when you need it. Or do not help if you find this hard.
Love yourself is to call relatives less often if you do not want to talk to them. Or more often, if you wish.
Love yourself is to cook a delicious meal. Or order delivery, if today you are completely broke.
In fact, self-worth is to minimize the amount of what you do not like in your life and increase the amount of what you love. It does not tolerate discomfort and actively take care of your own good.
IIt is impossible by some miracle to grow the self-love for 1 day, and then begin to practice it. Because it is a consequence of this practice.
You can not first love yourself, and then quickly give up what you do not like. Because you learn to love yourself gradually by giving up everything unpleasant to you.
You can not first love yourself and then give yourself the necessary rest. Because you learn to love yourself by allowing yourself to rest.
Practice self-love. Not abstract, but concrete, practical steps every day. This is something that you can start doing right now, without reading books on psychology or taking the training.