As Muslims, how can we expect to apply the Quran to our life if we don't know what it says (because we don't read it) or we don't understand what Allah is telling us (because we don't read the tafsir) and we don't make a conscious effort to apply it (because we don't take time to reflect)?
Allah tells us in the Quran how to have good morals and manners and how to behave well. The Prophet (s) expounded and expanded on these. Within the tafsirs the scholars have used the hadith to explain the meanings of the Quran. If we're not reading the Quran and the tafsir then we're missing out on what Islam requires of us.
If you want your children to have good morals, manners and behaviours then you need to teach them to attach to the Quran. But before you do that, you need to attach yourself to the Quran. Remember children do what they see.
If you want to start journaling, try the ayats from Luqman's Advice. If you don't know where to start, use this journal, it's full of the types of questions based on the tafsirs to get to thinking. It's a good template to get you started.
This journal is for both children and adults to use. Luqman's advice is applicable to everyone. When adults journal about it, it's for personal development as you try to improve or correct your behaviour. When children journal, they will learn how to behave in the correct Islamic manner.
The tafsir used for this journal are:
Tafsir Ibn Kathir,
The Advice of Luqman the Wise to His Son (Ash-Shaykh Al-Allamah Rabi Ibn Hadi Al-Madkhali) and
The Wise Counsel of Luqman (Shaikh Abdul Razzaq Ibn Abdul-Muhsin al-Badr)