Maybe you don't like your job, maybe you didn't get enough sleep, well nobody likes their job, nobody got enough sleep. Maybe you just had the worst day of your life, but you know, there's no escape, there's no excuse, so just suck up and be nice. ↗
The unfortunate thing about working for yourself is that you have the worst boss in the world. I work every day of the year except at Christmas, when I work a half day. ↗
That's the way I look at things - if you focus on the worst case scenario and it happens, you've lived it twice. It sounds like Pollyanna-ish tripe but I'm telling you - it works for me. ↗