That's entirely possible. This really does require self-reflection and humility. It's important to be self-aware of your state of mind, and to think critically about why you might feel that way.

I certainly have. For me, if I'm being totally honest, I have a tendency towards depression. I've had a hard life and it's taken a toll. If I don't work at it, I can very easily fall into depression. So I've had to think long and hard about what makes me happy, what makes me unhappy, is my mood at the moment being impacted by internal or external forces.

There are times where my bad mood isn't about anyone else but me. There are also times when I can feel my inner reserves being sucked dry by the person in the room. You need to be willing to look at yours as a whole, which is definitely challenging for some people.