Assertiveness skills are easy once we have a guidebook to follow. DEAR MAN skills can be surprisingly effective, and having a script to follow reduces anxiety about the conversation.
Describe
Express
Assert
Reinforce
Mindful
Appear confident
Negotiate
When we add GIVE (gentle, interested, validate, easy-going manner) and FAST (fair, no apologies, stick to values, truthful) to the recipe, resolving conflicts can be easy and stress-free.