"if only i had decided to take a different route i wouldn't have gotten into this accident! aargh! " this thought is an example of

counterfactual thinking

Explanation:

Counterfactual thinking -

In the field of psychology , counterfactual thinking is the tendency of the human being to search for some alternative plans to the incident which is completed , i.e. , thinking of some counter plans for the incident , is referred to as counterfactual thinking.

In this situation the human mind keeps on thinking about the same incident from various angles and think positively or negatively for the same.

Hence, from the given statement of the question,

The correct term is counterfactual thinking.

in about winter like late november to january