Additional information

If you want to solve a problem jointly, the other side must also agree! That will only be the case, if the solution satisfies his/her needs and concerns.
Therefore, ask yourself questions such as:
- What is probably important for him/her?
- What could be his/her motivation?
- What are the good reasons that might explain what he/she wants? (People always consider that they have good reasons for wanting what they want!)