Truth and kindness must come together. Truth that emotionally destroys, or kindness that leads to misunderstanding, distancing friends, or creating abuse are not worth having.
Creating good communication habits, especially with people we love, leads to more happiness in relationships, through better problem solving.
When talking about something that might hurt feelings, it’s often best to bite the bullet. Not in just blurting out your thoughts, but by addressing the matter in a non-confrontational way, validating emotions and respect, suggesting proactive ways to go forward, and listening with an open mind. Dumping a problem on someone without this process CAN be hurtful and create unnecessary tension around the relationship, rather than having the focus be on working for a solution.