It seems like "Resent Yourself" is not an actual song by Koopastar. The lyrics provided seem to be a mixture of the intro and the first and second verses of Eminem's "Lose Yourself", with some alterations and added lines.

Nevertheless, analyzing the lyrics, it is a motivational song about seizing the moment and taking advantage of opportunities, even in the face of adversity. The song narrates the story of a struggling rapper who is nervous and doubting himself before a performance, but eventually overcomes his fear and delivers a great show. The chorus reminds the listener to "lose yourself in the music" and not let go of the chance to achieve success.

In the second verse, the narrator describes the challenges that come with success and the toll it takes on someone's personal life. The themes of perseverance and determination are still present, as the rapper continues to pursue his dream despite the obstacles he faces.

Overall, "Resent Yourself" (or "Lose Yourself") can be interpreted as a call to action for anyone who wants to achieve their goals, even when faced with self-doubt and external barriers. The song encourages taking risks, working hard, and not giving up on oneself.