Quranic references needed that provide solutions to family problems and emotional turmoils.

This blog tends to outline 4 important aspects of our life that we can manipulate to make our lives full of happiness. It opens up "Most of us suffer from heaps of emotional, social and personal problems. Some experience relationship difficulties and some face educational hardships. Some have even lost that emotional bond with their families." My question here is: Does Quran or Hadith provide targeted solutions to our emotional problems or complicated family situations? Such as complexities in marriages, sibling rivalry and sense of being unloved or left out.

Blog Link: blog.avenueislam.com/2012/09/4-strong-influencers-of-our-life-making-us-happy-eternally/