Don't let their misbehavior taint your judgment or negatively impact your own behavior. More importantly, never take another person's bad behavior personally, even if the bad behavior is offensive to you, and even if the bad behavior seems to be targeting only you. Be empathetic toward all people as you never truly know all the challenges they are facing in their personal or professional lives. Always approach all situations objectively and without personal bias, don't allow your own personal feelings impact your judgement, focus on the issue and task at hand rather than the individual(s) involved, and use strong data and evidence before making a decision. A good quality control step for all your decisions is to consider if you would make the same decision for your closest allies and those you dislike.