Giving feedback to a colleague, given the relationship we have with him/her, can lead us to empathize and probably make it difficult to be honest so as not to make him/her feel bad. It is important that we are clear about the objective. We also have to make clear that we want to help our colleague to improve because we appreciate him/her, and if he/she improves, this will have a positive impact on the performance of the whole team. We must be specific, give examples and explain in detail why and how we suggest that he/she can improve.