Cause man it's a mission, tryna fight to the finish, just to see if I'm finished
People think trying to make it as a rap star is just as simple as any other job, they are wrong. It is a very difficult profession especially to continue to be on top and relevant. He compares it as a mission, usually a military mission.
In addition to fighting to become a rapper, the mission Drake is referring to could be the mission to be considered the best rapper alive, and every other rapper in the game is fighting to the finish.
Hence why he did not compare it to a race, because no one is trying to prevent you from finishing the race.
To help improve the meaning of these lyrics, visit “Worst Behavior” by Drake Lyrics and leave a comment on the lyrics box