List of 10 things I know for sure:
1. The sentence of monotheism (kalinat tauhid)
2. Al Quran and Hadith
3. Worship five times.
4. Healthy life physically and mentally.
5. Know yourself
6. Friendly family and community environment.
7. Communication and adapt.
8. Adab and Morals.
9. Time and change.
10. Keep learning How to read life