Those who can, do. Those who can't, teach.

 I know personally two separated mums who are acting ill-tempered and disputatious when co-parenting with their children's dad. At the same time both of them are advertising themselves as therapists and one of them is actually a professional family therapist. Someone who gets a lot of positive reviews from her clients. 

It baffled me for years. If you are advising others, why can you not follow your own advice when you are co-parenting? 

Then I remembered. 

There are a number of very successful sports coaches who can not play that sport at a high level themselves because of their personal limitations but they can coach others who have suitable qualities to succeed. 

Men tend to try to "power through" the new life crisis or just "walk away and give up" when facing an unavoidable conflict of interest, without asking for more information (education) about their new situation. 

Significantly higher percentage of women than men, who find themselves wrapped up in a high conflict co-parenting situation, will reach out to educate themselves about their situation. Hoping to find answers and guidance, most of them will dive into reading what Google can provide. Some will go a step further and will enrol themselves to courses or accredited education. 

Those who have suitable personal qualities will change their co-parenting situation for the better. But the majority of them will learn what they should do, but due to their personality type (usually very low stress tolerance), they can not make it happen to themselves. But they know what people in their situation should do. 

They can share their knowledge with others. 

As the old saying goes: 

"Those who can, do. Those who can't, teach."