Stress can hugely impact how well you interact with — and thus persuade — others. In any job, you need the cooperation of your colleagues and clients, and you’re less likely to get that if you are abrupt, terse and snap at those you rely on.
Additionally, mistakes resulting from stress can affect the workplace environment. A deadline not met on time could delay a sale and upset a big-spending buyer. Or a pricey sale might be stalled because the paperwork wasn’t ready on time, creating tension between you and the finance team. Or a presentation might go downhill because of an unexpected question or prolonged disagreement.
These situations quickly escalate into conflicts, which can lead to even more mistakes. Your business suffers when stress takes its toll, which is why you need to treat your co-workers and clients with the same respect and gentility you would a customer.
Maybe even more.