It's only a little difficult to say no. You've got to believe that the work you're doing is ultimately more useful to the world.
Derek SiversThe most brilliant idea, with no execution, is worth $20. The most brilliant idea takes great execution to be worth $20,000,000.
Derek SiversEvery time you're making a choice, one choice is the safe/comfortable choice - and one choice is the risky/uncomfortable choice. the risky/uncomfortable choice is the one that will teach you the most and make you grow the most, so that's the one you should choose.
Derek Sivers