Often our kids primarily need a sounding board for their feelings. Support kids when they express feelings. Be patient with kids' direct or indirect expressions of feelings. Sometimes they find it difficult or impossible to share certain feelings with parents, so give them a chance to talk with others. They need a wide range of options.
Feelings are never good or bad.
Even well intentioned it sends the wrong message and invalidates the feeling. Don't set consequences when kids are sharing their feelings honestly. Avoid any language or action that might seem like a threat or punishment. Don't dominate the conversation. Appropriate sharing is fine, but when kids have feelings, it's important to let them own them.