So do you think it is over training? OR, are you just bored as hell in the weight room?
These things are treated differently.
For instance, if it is over training do as Its_Just_Me recommends and take some time off and make sure your eating enough.
If it is boredom and you are spinning your wheels you need to set new goals. If you have been lifting for size try shooting for PR's or vise-versa. Set new goals to keep yourself focused or bet a friend who can bench, squat, and pull the most. Or bet a friend, who can lose the most fat. Get the idea? goals or wagers make thing more interesting. For me at least...