I fear too early, for my mind misgives some consequences yet hanging in the stars shall bitterly begin his fearful date with this night’s revels, and expire the team of a despised life closed in my breast by some vile forfeit of untimely death. But he that hath the seerage of my course, direct my sail. On, lusty gentlemen.

my translation

I’m scared, that my mind doesn’t think of the consequences. I’m worried that something bad is going to happen tonight that will end up with someone dead. But who ever is in charge of me will take control.