Know Where You're Going
Don't get everything twisted: You need not have the subway map uploaded into your brain, Matrix style. But have a vague idea of where you're going. Some notion.
Which borough are you traveling to? Know uptown from downtown. Local train or express: which is the right fit for you?
Odds are you're holstered up with at least two devices that can give you directions to your destination. Slowly breathe in the future, grip your iPhone tight, and figure out where the fuck to go.