The stress is building up, I can't
(Yo, I'm on my way over there man)
I can't believe suicide's on my fucking mind, I wanna leave

from The Notorious B.I.G. – Suicidal Thoughts Lyrics on Rap Genius

Meaning

Biggie is realizing that he is actually considering suicide.

“Leave” could either refer to either abandoning thoughts of suicide or actually killing himself.

Also, note how to beat starts to intensify and build up once he says “The stress is building up”

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