If you have a goal to learn and understand as much about the world as you possibly can before you die, strengthening your power of concentration is not an option, it’s a necessity. Внимание http://www.artofmanliness.com/2014/01/30/your-concentration-training-program-11-exercises-that-will-strengthen-your-attention/ Медитация http://www.artofmanliness.com/2011/09/07/a-primer-on-meditation/ Конце...