For which position would interpersonal skills be most important?

Interpersonal skills are particularly important in customer-facing roles. You will be expected to interact with others daily, often in a problem-solving role. Communicating clearly and active listening are key customer service skills, whether you are speaking with customers in person or on the phone.

Not my own workFrom Google

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cutting out negative people, changing their diets, exercising, taking off days from work or school, etc