I would repeat it daily. I tried to treat myself as if I loved myself. Thinking, if I loved myself, what would I do right now? It is the opposite idea of repeatedly saying negative things to myself. It didn't happen overnight. It took years of time, patience, and practice. You can be nice to someone even if you do not like them. With time, you might start to like them- they grow on you. I hope this is helpful. Sorry if not.