Knowledge itself is only part of the path. Knowledge is not productivity. It's not efficiency. It's a necessary step, and the first step towards those things, but implementation is the step that makes it worth the time and efforts spent learning. Primarily, remember to start small, work up to big. If you haven't been able to implement ideas in real life on a small scale, then the chances that you can do something big this week, such as kick a ten-year smoking habit, are pretty small. It can and has been done, but good luck trying. There are exceptions to every rule. This is where the comparison of self-discipline to the use of a muscle is important, because if you keep trying to tackle the big problems in your life from the get-go, you set yourself up to fail again and again. The more you fail on the big things, the more motivation you lose and the more it looks like the problems are too big to be beaten.