As long as I'm breathing, I'll take chances
A soldier comin' home, twenty years old with no legs
Sayin' there's no sense to cry and complain, just go head

from Nas (Ft. Large Professor) – Loco-Motive Lyrics on Rap Genius

Meaning

Nas here realizes that things could be a lot worse, and takes inspiration from people who are overcoming real, life-changing difficulties

The line is also a pun — as the soldier has no legs, he just uses what he has left, his head.

To help improve the meaning of these lyrics, visit “Loco-Motive” by Nas (Ft. Large Professor) Lyrics and leave a comment on the lyrics box