Living "Outside of the Box"
When you feel like complaining about someone else in the office, know that this is normal, just like in any other family. However, try first to think if there is anything else you can do to help the situation, and remember that we have an open door policy.
There is a classic book titled "Leadership and Self-Deception" that covers this topic well.
And why beholdest thou the mote that is in thy brother’s eye, but considerest not the beam that is in thine own eye? Matthew 7:3.