It is never good to allow an employee to feel any sense of accomplishment. PERIOD. In a recent situation one of my subordinates was so freaking proud of his success. As a good manager you need to teach humility. When he came beaming into my office and disclosed his latest successful task, I responded with a sarcastic “Alright….?” Notice the question mark, that immediately allowed him to know that I was not impressed, at all.
Like any approval seeking character he immediately became defensive, the key here is to stand your ground. Shoot down everything, and what you cannot shoot down, minimize to no end. You WILL succeed every time. Game over, you win, FATALITY.
The beauty of this is that when raise time comes, your subordinate should KNOW that a raise is not in the cards. This will make the conversation that you don’t have with him/her easier!