How do you deal with weaknesses and flaws in people you have to deal with all the time? Serious answers only.?

If it is people I love and care about such as friends and family members I am able to ignore and turn a blind eye to this. I guess when you love and care about someone it easy to to see how their good traits outweight their bad ones. With people I work with I try to stay as professional as possible. When they are working I make a point of not staying in the same room for lunch with them. I often go for walks during my breaks since that helps to diffuse some of the irritation I may feel.