For me past challenges was drinking enough water, quiting diet sodas, and fighting sugar cravings.
Currently I for some reason am having a hard time eating enough veggies. I usually love veggies but now they bore me. I am over salads right now and I need to eat more dark green veggies. I took a week and just didn't stress it hoping to feel better about them this week. I eat them but it's such a chore.