By Sara Wallis RAGE. I’m full of it. Life is full of irritations, and as my husband will attest, I like to point out every single one of them. He says that I start most sentences with: “Do you know what’s annoying?” before launching into a vein-pulsing rant. Often it’s people. From the snippy school-gate mum to the bad driver, the rude receptionist and the loud eater on the train, it’s enough to shred anyone’s nerves. Do I wish my husband would breathe more quietly? Do I wish he wouldn’t take 45 minutes clattering around the kitchen to make a ‘proper’ coffee? These are all reasonable grievance…