my partner and I run a business together him more than me. While is was slow and not very busy I took on a Sunday job which I love I’ve been doing it six months. The business is now really busy and I’m working 6 days a week. Im chronically ill too and exhausted so I need to leave the Sunday job. I’m an over worker and should have left 2 months ago but I know they need me and enjoy the work I do. What’s should I say in my resignation letter. I also need to put on my big girl pants and put myself first.