Given a premise, an initial context, an original ending, and a counterfactual context, the task is to generate a new story ending aligned with the counterfactual context and as close to the original ending as possible. Each instance consists of a five-sentence story. The premise is the first sentence of a story, and the second sentence, which is the initial context, provides more information about the story's context and the story's general plot. The original ending is the last three sentences of the story. Also, a counterfactual context is a slight modification to the initial context. You should write a new story ending that edits the original story ending as little as possible to regain coherence with the counterfactual context. To sum up, you should write the last three sentences of a story based on the premise(first sentence) and the counterfactual context(second sentence) of the story.
Q: Premise: Dave just started a new job in accounting. 
 Initial Context: He had never had an accounting job before. 
 Original Ending: Accounting was his major in college but he never worked in it. He was nervous he wouldn't be good at it. A few days into his job Dave picked things up quite easily. 
 Counterfactual Context: He had never had an accounting job before but will never be nervous about it.
A: 
Accounting was his major in college and he knew the subject well. He was certain he would be good at it. A few days into his job Dave picked things up quite easily. 