To use Lean change management for Industry 4.0 readiness, you need to follow a systematic process that involves four steps. Firstly, you should define the problem or opportunity you want to address with Industry 4.0 technologies or practices, and the desired outcomes and benefits. Utilize the 5 Whys technique to get to the root cause of the problem, and the A3 tool to document your analysis, goals, and action plan. Secondly, implement the changes that have been planned by using small-scale experiments or pilots to test your assumptions and hypotheses. Smart technologies and data analytics should be used to monitor and track your results, as well as communicate your actions and findings to stakeholders. Thirdly, evaluate the outcomes and impacts of your changes with quantitative and qualitative measures. Compare your actual results with your expected results, and identify any gaps or deviations by using data and feedback to learn from successes and failures. Finally, adjust your plan and actions based on your evaluation, deciding whether to continue, modify, or stop your changes. Implement successful changes on a larger scale, standardize them, sustain them, share learnings with the organization, and celebrate achievements.