Some people he might not succeed in school, but they succeeded in getting a good job. Some of them succeed both in school and work, and that is to their success.
Some of them may not succeed in their studies, but they were successful in the job. Some of them succeed both in school and at work. That is their success.
Some of them may not succeed in learning but they succeed in getting a good job. Some of them succeed in both learning and good job. And that is their success.