Everything you need is actually not within you, sometime you need to cross other people's lane in order to become successful. The path to success is not fixed and this is the reason you should not limit yourself to your own ideas. Try out what others are doing and it might probably work better for you. You really don't need to go 360 degrees but you don't also stay stagnant waiting for opportunities to come by, you look for it and grab it. It might come through someone or self realized. By the way, success depends on your mindset and believe. It doesn't just happen like that, you must work hard for it and show determination.
I don't know if this conversation goes here or fits more in the Politics&Society board. You both are describing two of the most popular ideologies in the last centuries: liberalism when Luizwalter Crypt says that everything you need is within you (individualism) vs socialism when knowngunman answers that sometime you must try out what others are doing (gregariousness).
Reality is more complex like that and, paradoxically, both are right and still wrong. There is no perfect formula, not yet at least.