1. We have food, clothes and shelter to live in.
2. We have time to spend s with family without any problems.
3. We have not done any harm to anyone for our benefit
If we are happy in our life we can say we are successful.
There is definitely a hidden factor which some people believe as God or Almighty while others say 'chance' or 'luck'.
Unfortunately most of the people have double standard. When they get success they say 'I did it'. On the other hand when they fail they curse 'bad luck'. So interpretation of success is different from individual to individual.
Knowledge is power.