I bullet journal!! I love it so much. I include the sections that work for me and leave everything else out. Plus, because it's done in a regular old journal, I get to decorate it with my washi tape and doodles
go to bulletjournal.com to see the intro video, then you can go to pinterest and/or IG and search for #bujo #minimalbujo #bulletjournal and see SO MANY ideas on how to customize.