Success is relative mate and it always evolves based on your circumstances. For example, a few decades ago I dreamed about having a $500/month salary, and then it increased to $1000, $2000, and so on. It's a never-ending cycle and you can't plan about it since the future involves luck, fluke, accident, etc.
So if I were to advise my younger self: Don't search for "success," it has no meaning, rather, do your job diligently, be grateful, and take every good opportunity (to grow) even if it's difficult. Then you have a good chance to be prosperous.