"Track progress visibly to close the execution gap A meta-analysis of 138 studies covering nearly 20,000 participants found that people who monitored their progress toward a goal were significantly more likely to achieve it than those who did not. The speaker applies this directly: when writing his book he tracked daily word counts in a Google Sheet, and when studying at Cambridge Medical School he colour-coded his entire syllabus red, yellow, or green by confidence level — producing his highest exam scores. He notes that 'ever since I got a Whoop band I've been aware of my sleep score and my sleep has improved really without me having to do anything other than just looking at the number every day.' Pick one visible metric for your current goal and record it daily before deciding anything else about your system. Source: Ali Abdaal, Ali Abdaal YouTube, How to Actually Achieve Your Goals — The GPS System"