Always think bigger picture than what you're immediately working on. (I don't mean that you can't ever just focus on the problem you're trying to solve for, sa

Always think bigger picture than what you're immediately working on. (I don't mean that you can't ever just focus on the problem you're trying to solve for, say, hours. I mean you can't focus like that for the entire time you're in that development phase.) Think about design and code (and functionality!) before you start coding. Think about design as well as code while you're coding. Think about design, code, and functionality while you're testing.