getting off at work

i work nights and i've been having a hard time staying focused lately. the past few weeks i've found myself jerking off in the break room after my shift, sometimes sneaking back for another round before going home. it's just so easy to get distracted here, especially late at night when no one else is around. tonight i was actually doing inventory in the storeroom and got this urge that wouldn't go away. had to lock myself in a supply closet until the moment passed but felt kinda desperate to be alone with my hands. wonder if anyone else ever does stuff like this where they work? i feel so secretive about it, is there something wrong with me or is everyone just as sneaky about their solo time?