It's important to look at yourself without judgement lurking. If you're already judging your weaknesses, instead of working on them, you will harden and strike out at those around you. No one likes to see weaknesses in themselves. It's easier to make excuses and blame others. Everyone has weaknesses. But it is very hard to confront them without judgement. It's like looking at a skin blemish on your face in the mirror. We are quickly horrified, try to cover it up, so no one else sees it. If you can accept yourself emotionally, you will be able to accept those around you.