"Lifetime" by Censei is a song about living in the present moment and striving for greatness. The hook of the song emphasizes the desire to go far and high, and never look back. The lyrics suggest that the protagonist wants to make the most out of their life and be "alive," indicating a passion for living life to the fullest.

In the part of the song, the protagonist seems to be addressing someone who betrayed them. They no longer trust that person and are ready to move on from that chapter of their life. The lyrics imply that the protagonist has been working hard every night and is determined to succeed without any limits. They acknowledge the difficulty of leaving behind someone who made them feel complete, but they must persevere and continue moving forward.

Overall, "Lifetime" by Censei is a motivational and empowering song that encourages listeners to focus on the present moment and strive for their goals.