I'm always trying to increase my productivity, in both professional, educational and personal life. Since 2010 I've been working on incorporating David Allen's well known productivity methodology Getting Things Done® (or GTD for short) into every aspect of my life. In short, GTD is the "art of stress free productivity", where you relieve your brain from always trying to remember what you need to do, by entering it all into a "trusted system" that will remind you of what needs to be done at the right moment.
Currently I'm using the ingenious web app Nirvana 2 as my trusted system. It's currently in a closed BETA, but read my article on it to learn how to gain immediate access. In the past I've used other good combinations of web and Android apps, including ActionComplete Pro, Producteev, Shuffle/Tracks, and GQueues.
I also run a blog where I review GTD systems for Android, iPhone, web, desktop and more.