A work colleague has ruined my life. I can't go into too much detail but suffice to say my career is in the shitter because of her actions. I'm signed off sick with stress and anxiety. I wake up in the middle of the night thinking about smashing her head in. I hate her but I hate myself more for these thoughts. I don't want to be consumed by this but it's all I seem to think about. I would never ever do anything to her but how do you stop wanting to?