[Tamaki doesn't exactly know the details of the job she's referring to, but he knows enough to realize that she's referring to herself and he doesn't like to see any one sad, so he'll do what he can to try and cheer her up.]
You should keep trying your best. People are counting on you to help them, right? So even if you really can't make things work in the end at least you were able to help them feel safe for a little while.