New world out there/Feel passionate about

If the speaker is a preacher and he says you have to strick and God, then some time later he says "there is a new world out there" what might be the meaning of its words please?

Feel passionate about -Is that correct to understand things that fill one with joy?

Number two - Fail big. That's right - fail big.Today is the beginning of the rest of your life, and it can be be very frightening, It's a new world out there. It's a mean world out there and you only live once so do what you feel passionate about.