I wrote my post and headed off to work only to have the WORST day possible, seriously. I cried at work much to my embarrassment.
Same problem, co-worker seems to be targeting me. This time over something that I used my best judgement in as opposed to following the usual protocol (and was backed up by my manager). The co-worker let me have it even though they have no authority over me, in fact I have been in this particular role longer than they have. Mind you, I don't consider that I am the boss. That's not me. I have no intention or aspirations to become any sort of a leader in my workplace.
To be honest, now I don't want to go into work but I'm forcing myself. The manager knows what's going on and is taking steps to help but in the meantime I am working myself up into a state about it. When I look back at yesterday, I was already upset before I even got into work by the co-worker's previous actions... I barely remember the drive to work, I was so pre-occupied.
There is always an undercurrent of animosity. It's just awful.
Wish me luck for today, once I get through today then I am not back at work until next Tuesday, which will be a relief and hopefully give me time to regroup a little and work time to sort this person out. (Though that's what I told myself last week too :/ )