Work is a funny thing. Tasks you schedule. Deadlines you must meet. The ability (or requirement) to work late. Work is a flexible creature that expands or contracts depending on the time you give to her.
So tighten those deadlines, force yourself to finish work by a set hour, and don’t let work carry you deep into the night. Because she will.
Remember Parkinson’s Law: "work expands so as to fill the time available for its completion".