Cut my nose to spite my face?

See the sell trade, around early October?  That's based on some fundamental analysis, believe it or not; no doubt the recent share price action biased my judgement.  But it seems I sold right at the bottom of the trend.

The buy at the end of the month is a reinvested dividend, done automatically and there to taunt me as the share price rose strongly over following weeks.  Until Friday.  And now, this morning the smug satisfaction as the buyer who took the shares off my hands finally gets their comeuppance.  Even though my dividend-in-shares has suffered equally, I feel so much better.

How daft is that?