The obstacle to improvement

A lean "specialist" shared yesterday certain obstacles to the improvement he usually meets.

My experience is that there are no simple answers to handle this obstacle. The first thing I usually do is to check if I'm not that obstacle. Three tips if we are able to accept that we can be the obstacle.
- Do not look for the obvious, do not ask questions that confirm your view. Learn how to ask questions (see previous posts)
- Do not get lost in the method and in the details, think in terms of purpose of the process studied.
- Challenge your thinkings/assumptions about work and people, even if you think you do.
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