Complex sentence: Parents who follow an emotion-coaching philosophy tend to be aware of their emotions and the emotions of others, are able to talk about these emotions, and who help their children understand and express their emotions, particularly sadness and anger.
Split into simpler sentences: Parents who follow an emotion-coaching philosophy tend to be aware of their emotions and the emotions of others. They are able to talk about these emotions, and who help their children understand and express their emotions, particularly sadness and anger.