Patience and Persistence is big with blogs. Your not going to become a millionaire over night and your not going to be able to quit your job tomorrow thinking your blog will take off.
It might take a few months it might take a few years but if you keep on at it then it will grow. Remember to blog often and you will see it grow.
There are many success stories about bloggers starting a blog and can now buy a house from the income they receive from there blog! Remember that it didn't happen over night.