Of course, success does not mean being rich. There are a lot of failed people with a lot of money. Success is measured by the happiness in the soul. Many people who seem successful are not happy. In most cases, rich people do not live a successful life.
People living a truly successful life are rare and far between.
People living a failed life are numerous and can be found almost anywhere. Success is a measure that is immeasurable. It does exist. If you understand what I am saying, then you have reached this essence half-way. If you do not understand, you still have yet to grow.