Why YSK: Because generally speaking, most people are way too hard on themselves.
To put it quite simply, we do not look at ourselves the way we look at other people. We view people the same way we view a completed puzzle, all of the pieces combined form an image. We look at ourselves as individual pieces and we get frustrated when they don't align the way we would like.
We also have the ability to view people with our naked eye. We are only able to see ourselves through reflections or photos, both of which are not accurate representations of the way other people see us. Most of us are not so critical on the appearances of others but are exceptional at judging ourselves.
Be nicer to yourself yo.