Just watched a video a friend posted about (among other things) how to give feedback using the BOOST method. Feedback should be Balanced, Objective, Observed, Specific and Timely. Balanced: not just an emphasis on the negative, but both negative and positive. Objective: not framed emotionally, but looking at the facts. Observed: based on something you have witnessed yourself, not something second-hand. Specific: looking not just at a broad issue, but the exact matter you’re talking about, and providing guidance on how to correct it. Timely: if there’s a deadline (the person will repeat the mistake) then working to that deadline, but otherwise giving the person a suitable amount of time to process the immediate fallout of their behaviour before providing the feedback.