Einstein famously said:

“If I had an hour to solve a problem and my life depended on the solution, I would spend the first fifty-five minutes determining the proper question to ask, for once I know the proper question, I could solve the problem in less than five minutes.”

Now of course, unless you are Einstein, the answer might take you longer than five minuets to answer, but the lesson here is very relevant to designers:

Remember: You can't solve your client's problems if you don't ask them the right questions.