Umar ibn Al-Khattab, may God have been pleased with him said "Judge yourselves before you are judged (by God) and weigh your deeds before they are weighed for you!"
Every Muslim should develop a checklist and go through it regularly, even daily:
1. Did I perform all prayers on time? Did I compensate for the ones I missed?
2. Did I make any charity or good deed today? Even a smile is a charity.
3. Do I owe God any fasting, charity (Zakah), vows (Nadhr) or Hajj?
4. Do I owe people money or an apology?
5. Did I stay away from sin? If not, did I repent and compensate with good deeds?
6. Did I treat people with kindness and tolerance? Am I good to my parents, family, relatives, neighbors, friends, colleagues and people I come in touch with?
7. Was my example a role model of a good Muslim?
8. Did I recite, listen to or study verses of the Quran? Did I study teachings of the Prophet, peace be upon him? Did I understand them? Did they have any effect on my life?
9. Did I improve my mind, body and spirit? Did I contribute to the enhancement of the lives of people around me and our environment?
10. Did I voice my approval of good acts (Ma`roof) and disapproval of bad acts (Munkar)?
++Ayman