Success can be defined by the individual or society. If you ask different people, you will not hear the same answer. Money and fame used to be the only measure for success.
I asked one of my students recently and I think he has a very good answer.
" Success for me is having a good relationship with my family, my friends and the people around me." If you are happy then you are successful.
What is a success for you?
success for me is to get better and better every day without changing you morals and principle no matter what may happen. I feel comfortable in the end of the day knowing that I used my time effectively that is success to me.