4.0

Things I’ve summed up from this book:

Relationships are based on a see-saw balance.
If one person wants to change, but is afraid to grow because of how the other person react, this will cause strain on a relationship. Or if they do try to grow by having a new change in routine this shifts the balance and the partner may begin to feel like they have something to prove which again creates arguments due to feeling hurt.
If both people do not adjust to this when there is some sort of change in the relationship (whether its intimate or friendship, family and so on) then this will make the pair grow apart. People need to be on the same balance so if one person does change routines or does something different that it is acceptable for their partner naturally. Otherwise its made for disaster.
Anger comes out of low self esteem and hurt feelings.