1 - you walk out of you daughter's room after putting her to bed for the night only to find out two hours later (while she is still awake) that you never turned off the lights in her room.
2 - your daughter asks you to help her put on your jacket on over her diaper first thing in the morning and you almost walk out the door twice with her wearing just that.
3 - you come out to the Costco parking lot after grabbing a few needed items and dinner only to find your keys aren't in your diaper bag. Thankfully, the car is unlocked but you don't see the keys on any of the seats you tend to leave them either. Then you notice they are in the ignition.... and the car is still running.
All hypothetical examples of course. If you experience any of the above symptoms, seek professional help immediately.