I was wondering how long you have been with adsense, and how long it took you to make $10/day off your sites(if you are)

I have been with adsense for 3 weeks, and I have made $30 so far. I am hoping to build my sites up to the point that they make $10/day, that is my first goal. Do you think they have potential? I have been working really hard on them. I just finished 2 more yestuday, but havn't got them out there yet.

So, how long have you been with adsense, and how long did it take you to become successful at it?