Self-awareness can be a differentiating attribute if you work on your ability to drop your ego and truly analyze where your strengths, weaknesses, and tendencies lie.
Asking others for constructive feedback, as well as being honest with yourself, allows you to find the areas you excel verse the ones you struggle with. Acknowledging both gives you the ability to spend time leveraging your strengths and efficiently navigating around your weaknesses.
I highly encourage you to explore Gallup CliftonStrengths. This is one of the ways I have been able to dive deep into this topic.