The last post I made got a great response so hoping that I can get an answer on how much I need to make to live in SF or NYC.

I grew up in the Bay Area and went to get my own place in SF with some friends, but the rents seem crazy high. I hear people saying 30% of your income should go to rent, but that seems impossible. Is this number outdated or do I just need to move to like Walnut Creek and commute or something?