We’ve all seen the Instagram posts: the sun setting over a beach in Koh Samui. The caption reads, “Work finished, going for Mai Tais and grilled Cobia #blessed.” Does it make you jealous? It shouldn’t. I’m writing this from my home office, looking out over another gray and dismal day in Yorkshire. And I wouldn’t have it any other way. Digital nomadism can be a lot of fun and, for some people, it’s the perfect …