Make sure that your nails are not super-long, but are short and functional. Nail polish will adhere better if you swipe them with polish remover first, to remove any natural oils. Do several thinner coats of color (instead of one thicker coat) and make sure you do a clear topcoat! Sounds like you're a busy woman though, so you might just have to deal with short-lived manicures! The other option is to use lighter colors (light pinks or nudes, for example) because they won't show chips as much.