Guest post: January Carmalt examines how mums can leap back into the workforce with confidence after the school-run sabbatical. Gap years. What do we think of them? No, no—think less setting sail to artificially inseminate indigenous blue-footed boobies of the Galapagos– more pram-pushing, nappy changing, food pureeing and later– forging ever more inventive means to entertain restless children during rain-soaked school holidays. Cast aside self-indulgent naval gazing and imagine instead those career-sacrificing years spent at Tumble Tots, play dates and bake sales. Ah yes, those gap years. These past decades women have made pioneering strides combining families with…