You know having close friends is one of the keys to longevity and wellbeing. But even being on good terms with your neighbors has benefits. Research from Rutgers University found that having regular, positive contact with neighbors was linked to a greater sense of personal growth, self-worth, and purpose. And all you have to do to get the benefits is wave hello – or let your neighbor borrow your hedge clippers. It’s all down to the fact that our daily lives can be enriched by seemingly minor encounters, which make us feel like we’re part of a community, and that we add value to a larger social network.