Just because you don't like a person doesn't mean nobody does

Is it them, or is it me? The hardest part to accept is that it is both of you.

We tend to blame out flaws on external factors, yet we blame other people's flaws on their character. If you're late for work, you can claim heavy traffic. If they're late, you think they're lazy. This is the time to remember that it's not necessarily their character; it might be something about the environment.