There will be times that you should not dismiss what happened or was said, and you should speak up. Don’t let your feelings of anger or resentment fester.

When it comes to speaking up, it’s crucial to recognize that it won’t necessarily feel easy to do, but that it is best for the situation that you do actually speak up. –
Plan how to bring it up. The goal is to be heard and for some change to happen. Not to vent, blame or show discontent.

Plan how you will remain calm though the conversation.
Plan the angle from which you will present your thoughts. Choose your words.

Carefully determine when and where to say it. (As necessary, discuss your situation and plan with a mentor or coach.)