[Encannavalf]

I was trucking along quite nicely, building up an almost-daily meditation routine then blam! I can't manage it. I went to my weekly vihara session and I spent most of it allowing my mind to be the master and brooding and getting in a right flap due to annoying myself with it.
I've just unintentionally really hurt someone, and perversely, only by trying to do the right thing and be compassionate and going out of my way to avoid creating hurt. I now face (for a simpleton like me) quite a dilemma, and I'm totally brooding about it and can't switch off. The knock-on effects of this are that I just can't 'get on the cushion' properly.
So it seems I can meditate when everything's hunky-dory but this just unravels when life goes a bit tits up and I just can't stop thinking about what an arse I've been without meaning to be.
Have any of you long-term meditators had this experience? Is there such a thing as a 'fair-weather meditator'.