Ladies how do you practice self love and self worth.

Same as the title. I am going through a breakup and overall a low phase in life where I am having existential crisis. I have had two relationships and both of them made me realise I lack self love and don't value myself enough. I go all out when I love someone and give them my all selflessly only to be mistreated at the end. How do I start building my confidence and love myself on daily basis? Are there any particular activities which you practiced which have helped you on daily basis to build your self esteem and deeply and madly fall in love with yourself? I also have a very anxious attachment style and abandonment issues to worsen things for me.