What actually works?

What actually works? There are so many methods, from the Pomodoro technique to the 80/20 principle, Taylorism, Danjou principle, GTD, classical simplification, WOOP, and Eat That Frog! They even talk about stereotype-based motivation!<br><br>It's all so overwhelming. I don't know what really works and what's just a bunch of unfounded claims. I feel like I'm wasting my time trying to keep up with all these methods and not actually getting anything done.<br><br>Can anyone share their experiences and what they've found to be effective? I just want to understand what actually works in the real world.