Imagine your manager of partner said "We need to speak later today". Would you expect praise or criticism? It would depend on your past experiences. The ideal ratio of positive to negative feedback is not 1:1. Recent research suggests a ratio of 1:6 is more likely to help people improve their performance.This means they are six times more likely to hear praise than criticism when you give them feedback on their performance. It means that you are much more likely to notice and comment on what they are doing well rather than comment on that they are not doing well. Practise everywhere you get service. Focus on what is being done well and give sincere feedback.