CCNA studying...

I'm on page 425 od a painfull technical computer book. It's so difficult applying myself to hour after hour of study with a devil constantly on my shoulder telling me its all going to be useless cause i wont get a computer job in the end. Man ive financially failed at so many things, i sure hope i can get a good job with this certification. i think ill do well if i study may ass off. its really daunting.