I missed last week, and I'm late this week, but the recurring thought for me during the tiring and difficult days I've had over the last week was, "Be proud of yourself today." It's what I've said when I've been tempted by unhealthy food or when I've been stuck in the self-pity circle. If I can honestly say I've done something to be proud of each day, that helps me through the day.
I hope you are proud of yourself today for something. I'm sure you've done something worth a bit of pride.