METER: Methodical Approach

In his latest blog, J Wynia talks about METER - Measure, Evaluate, Test, Evaluate, Repeat as a method for evaluating and improving situations or solving problems. While reading Getting Things Done, The Money or Your Life, Hackers Diet or even Purpose Driven Life I have noticed that they all boil down to the same basic steps:
Collect information, Analyze it, Use the result, Feedback

What it all says is really: You should repeatedly take time to analyze areas of your life that need improvement, collect information and make smart decision based on these.

Combine the METER method with SMART (Specific, Measurable, Attainable, Realistic, Timely) goal setting and you have two very powerful tools in your lifehack utility belt.