Bring two books everywhere.A book, so that you always have something inspiring to read, if you happen to have an idle moment, and a notebook, so that you always have a place to nake a note, if you should happen to have a thought worth keeping for later use. Think it over: how many spare moments have been wasted on Angry Birds - or whatever happens to be the thing of the moment on the omnipresent smartphone? How many thoughts worth keeping for later use are lost, because they weren't noted anywhere?
All to all those objecting that "unfortunately, I have no space for the two books when I am on the move": let me guess that you always have space for the omnipresent smartphone? Well, then it is easy: install an e-book reader and an application for taking notes on it. And open one of these two, whenever you have the time and the urge to throw a bird...
(Translated from Overalt!)