Most effective tools in Lean Operations

There are several lean methodology tools available, and the effectiveness of each one depends on the specific situation and context in which it is applied. However, some of the most commonly used and effective lean methodology tools are:

1. Value Stream Mapping (VSM) - This tool helps identify the steps in a process that add value and those that do not, allowing organizations to focus on improving the value-added steps.

2. 5S - This tool helps create an organized and efficient workplace by focusing on the five principles: Sort, Set in Order, Shine, Standardize, and Sustain.

3. Kanban - This tool is a visual management system that helps teams manage and optimize their workflow by limiting work in progress and focusing on completing high-priority tasks.

4. Just-in-Time (JIT) - This tool involves producing and delivering products and services only when they are needed, reducing waste and improving efficiency.

5. Kaizen - This tool involves continuous improvement and focuses on making small, incremental changes to improve processes and increase efficiency over time.

Ultimately, the most effective lean methodology tool depends on the specific needs and goals of the organization and the specific process or system being analyzed. It is often beneficial to use a combination of these tools to achieve the best results. 

However at a personal level I have found Value analysis to be the most effective tool for personal development. Analysing each of our actions to identify value and remove wasteful activities or actions is definitely going to be the most useful.

 In the initial stages value analysis is reactive but in later stages it is very proactive in nature.