Wu Wei, the Daoist concept of "going with the grain, rolling with the punch, swimming with the current, trimming sails to the wind, taking the tide at its flood, and stooping to conquer"* is easily misunderstood. I guess especially by Westerners, as it originates from a very different culture. I myself feel like I certainly misunderstood this concept in some ways. It's important to note however, that with my interpretation of wu wei, which is about to follow, I do not claim that that is the right way to understand it. It's just how I personally feel about it right now and what I feel I have misunderstood previously. First, let's get an idea of what wu wei is about, so that afterwards it will be clearer what it isn't about.
*Alan Watts in Tao - The Watercourse Way