Firstly, I was feeling sorry for myself having found out that I had pleurisy and was doing that whole 'Woe is me' lying on the couch thing; secondly, Charles Tyrwhitt had sent me a voucher for £10 off anything that took my fancy; thirdly - and most importantly - I'd spotted a tank-top in the brochure they'd sent.
I blame my tank-top addiction on my parents, who took every possible opportunity during my childhood to subject me to 1970s golf wear. Somewhere amidst all that retina searing clobber, I managed to single out the tank-top as my favourite piece of geek chic.
Now, I've been strong in the face of shopping this year - giving way only when (in the best interests of my work-mates) I felt that ripped, rump exposing linen was unacceptable for the office - but this tank-top was a temptation too far in my weakened state.
It was navy, a mix of merino and silk, and (did I mention this already) it was £10 off!
Anyway, those are my excuses and, quite frankly, none of them are good enough to justify keeping what is essentially half a jumper (delightful though it is), so having unwrapped it and gazed at it for the last 24 hours, I've decided it's going back from whence it came and I can sleep easy; guilt free in the knowledge that I haven't quite broken my shopping ban.