earn money from blogging??? it is real???

on these few days, i just get in other people`s blog and 'window reading'....
i found that some blogger actually they are already full time in just writing blog everyday and just hanging around, playing around...even though do not need to work to earn money....but they still make money everyday....
their freedom and financial independence make me jealous....and i wish one day will become one of them......
so now what i need to do is just follow their successfull steps one by one.....i will be able to earn money by just writing blog......

cheers