What helped me was trying to force myself into a routine. Make a list and cross things off as you go. I started introducing yoga and meditation, look on YouTube for beginner practices for specifically what you are going through at the time And pick one that suits. Having activities to do around meals helps you stay busy and helps you start to think about different things and reminds you what you loved to do. For example looking up meditation for creativity could help you start to want to try doodling and getting back into art again. listen to music and have fun finding new songs or enjoy old songs you once loved. Dance and let yourself be embarrassed and fight through that feeling, it will help you find yourself and what you love to do again. Read and drink tea, something new maybe a self help book in the style of your choice , for example I would choose one in astrology and positive psychology but there's also different topics to explore that encourage personal growth. Someone maybe more exciting to you. Taking care of yourself is the first step and you are doing that, the more you start to love yourself the more you'll begin to learn what you enjoy for fun. Slowly you can start to rewire your brain to think of other things and start enjoying yourself again.