To get along with others, and also become a successful leader know how to provide tailor made feedback that leads to performance improvement...

It's not a proper feedback if it's given to flatter and/or belittle someone. True feedback should be given to empower someone perform better.

If EXCELLENCE is one of your values, not only you self-critic and evaluate your performance consistently, you BEG others for honest feedback...

When you give feedback, make sure to be specific. I didn't understand you when you explained the chart or walked me through the steps of...

When you give feedback, make sure to give some examples. You listen well: I know that because you ask questions, nod your head, maintain eye contact, and so on.

Don't use proxies when you give tough feedbacks. Be direct! Rather than saying 'some people don't even know how to pick the right tie'. Pull aside the person who needs your feedback, and tell him/her in his/her face: 'Your tie doesn't match with the event', and offer some options.