Read "One Minute Manager". I completed last night. one of the best book and you will get great insights of management.
One minute praising - Tell people immediately that what good they did. Be specific and make feel them good. Encourage and touch them in a way that they feel it supportive.
One minute reprimand - Be specific and tell people what they did wrong. Let them feel how uncomfortable you feel because of this mistake. But never forget to remind them how much you value them.
And realize them that reprimand is over.
These are three secrets to b one minute manager............and......... remember some points-
1. Speak simple truth
2. Laugh
3. Work
4. Enjoy
1. Speak simple truth
2. Laugh
3. Work
4. Enjoy
These are keys of success.