"Stubbornly holding onto your losses when they are very small and reasonable"?
A funny story:
"A stockbroker who in 1961 bought Brunswick at $60 on the way down in price. It had been the market's super leader since 1957, increasing more than 20 times. When it dropped to $50, he bought more, and when it dropped to $40, he added again. When it dropped to $30, he dropped dead on the golf course".
The last one,
"Not being able to make up your mind when a decision needs to be made". Oops, it seems like saying nothing.