Based on our experience, the main delineation that you would need to make up front is whether you want therapy or coaching.
Most people don’t realize that there is a difference between the two. Both can be effective if used in the right circumstances.
Therapy involves the treatment of a mental or an emotional disorder. Therefore, if it turns out that you or your partner are suffering from a diagnosed mental illness, then therapy would be an option that is available to you. Similarly, if you or your partner believes that you might have anxiety, depression, etc. such that it might be impairing your daily living in a substantive manner, then therapy might be an option worth considering.
Coaching involves processing through personal and/or relational challenges that does not involve a diagnosable mental disorder. Therefore, if you and/or your partner are having conflict, but you do not believe that a clinically diagnosable condition is playing a role in the challenges you are facing, then coaching may be the best option.