4. "It’s not possible from me":

Never say this in front of your boss because it is this sentence which can put your career down because if you say this to your boss, definitely he will think that you are incapable of handling any assigned work. This can create a negative image of yours in your boss’s mind.

5. "All of them hates to work here":

It is the most dangerous thing which can make your life hell because you don’t know how each employee feels about the office atmosphere. It is always better to say that what is not working for you in the office atmosphere and why do you think of hating that instead of saying that everyone feels the same. Your boss doesn’t easily consider if you say him everyone hates to work in his office, he definitely clarifies the doubt with all the employees that are they feeling the same. And for your bad luck if there is no one with the same opinion, it is you who end up in trouble. So, make sure you never use this sentence in front of your boss.