I Feel Dismissed and Power Plays in a Relationship

You might know someone who is feeling dismissed in their relationship or it could even be you. You are curious about it and wonder how 111 pages can be written (there is some repetition and expectation of practicing it).

What type of power plays are there?

How do I respond when I see a power play?

I think it might be the end of the line if this doesn't work.

This is very practical, though there is some theory to organize your thoughts. Practical, real life examples, with details altered.