Here's a good post from the Daily Kaizen blog about the need to “stop selling” lean. Remember, “push” is bad, so if you're pushing lean (or pushing tools) on people, they are likely to be defensive.
If you are helping people solve real problems, helping them reduce and eliminate waste (thereby making their lives easier, as employees, and helping customers), then people will start pulling on lean. “Pull” is good. Show some success and people will start pulling on lean methods and your lean help.
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