It is said thousands years ago - control your emotions or be controlled by emotions. Freud emphasized that energy bounded to some emotions and mental states can be redirected, transformed, controlled.
General Taosist example is a river overflowed with monsoon water. It sweeps out everything when uncontrolled, but if people have built some dams and walls in advance, then all flooding waters will run into more-or-less controlled way.
So, if one can control himself why not use ones obsessions instead of being used by them?