An increasing number of people are spending their days in a home office, but working from home can be tough. Here are some tips on how to stay productive.   For Shelley Grandy, one of the best parts of working from home is the time she saves commuting – especially in the winter. “Not having to commute on snow days, I feel extremely smug,” says Grandy, president of Grandy Public Relations, which is based out of her home in Erin, Ontario,...