We do all have to make a living. And without that need, there wouldnt be a desire for "success". So first and foremost, we start out in our careers - or our search for one - to meet a combination of needs. Financial stability being one of those primary needs.
Financial stability, and finanical "success", allow us to enjoy even more success in our lives - whether that be a desired lifestyle, position, or whatever the individual wants to achieve most.
And achieving that is usually what defines success.
My initial goals were met long ago. It was an interesting point, where I had to put some thought into what I wanted to achieve next. I feel incredibly blessed to have reached this point of success, and look forward to continuing to raise that bar and move upward and onward.