请把下面的汉语翻译成一句英文:
汉堡-埃彭多夫大学医疗中心(University Medical Center Hamburg-Eppendorf)的研究人员斯特芬妮·布拉森(Stefanie Brassen)在电邮中写道,“随着年龄的增长,不要纠缠于过去不愉快的事,而更多关注积极正面的东西,这对于一个人的情绪健康是至关重要的。”
英语原文:
'It seems to be essential for our emotional well-being to not look back in anger and to focus on the positive when we are older,' Stefanie Brassen, a researcher at the University Medical Center Hamburg-Eppendorf, said in an email.