Testo Rock On

there's been heavy times in my life long nights and days when i felt i can't survive but somehow the power in my life is lifting me up, it's so good to get up and try again chorus rock on, i've got to tell you rock on, get your feeling on through rock on, it kinda makes you feel new rock on you got heaven and hell in your life it's all up and down you roller coaster all day but who can you tell in your life the things that you've seen the answer's there, but what does it mean