Success in gambling isn't a thing since it has different definitions for different people.
For example success in gambling for me is when i get a correct score in a football match or find that my analysis was correct and i have predicted the right outcome .
Success for others is having as much money as possible and for others is not having every bet wrong .
So finding success totally depends on your approach to things .
Having a perfect score something is really success and I havent seen it that way but I guess that would be a successful gamble. Mainly, in general, its all about how much profit in Gambling you could make but if you slice it little by little, it would be a successful gamble if you got it perfect.