Not quite sure what type of method you are referring too for this. Assuming this is asking about interpersonal effectiveness skills, I’d say D.E.A.R. M.A.N. and FAST skills.
Dear man stands for
Describe
Express
Assert
Reinforce
Mindfulness
Appear confident
Negotiate
FAST stands for
be Fair
don’t over-Apologize
Stick to your values
be Truthful