Effectiveness is doing the things that get you closer to your goals. Efficiency is performing a given task (whether important or not) in the most economical manner possible. Being efficient without regard to effectiveness is the default mode of the universe.
Tim FerrissPeople frequently fail when they try to do everything at once. They approach a massive project and quickly get discouraged. Taking small, but high-value steps takes less time, and you learn more in the long run.
Tim FerrissAwareness, even at a subconscious level, beats fancy checklists without it, track or you will fail.
Tim Ferriss