I've done very well with the following rule of thumb: If you're not a little bit embarrassed by the amount you are charging, you are not charging enough (also a

I've done very well with the following rule of thumb: If you're not a little bit embarrassed by the amount you are charging, you are not charging enough (also applies for making offers on a house and any other kind of financial negotiation) You don't need to justify it beyond "it's the market rate for your skills"