I found this poster while looking for a keep on trucking image. It seems to apply universally.

A very nice motivational quote, indeed. If I recall correctly, this is by American radio host Ira Glass. It used to be my desktop wallpaper.

This was from a great interview with Ira Glass, from This American Life. Relevant part here:

https://www.youtube.com/watch?v=BI23U7U2aUY

You might like the rest also.

edit: ninja'd but here's the link anyway.

The interview is indeed very good (I hear it once or twice a year, likewise with Jobs' commencement speech.) This webcomic is also a pretty good sum-up (also take a look to Bill Waterson's, and I'm not linking it directly so everyone can take a good look at the web )

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Geek of all trades, master of none: the motto for my blog mostlymaths.net

That poster is also applicable to the teaching profession.

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Still officially AGA 5d but I play so irregularly these days that I am probably only 3d or 4d over the board (but hopefully still 5d in terms of knowledge, theory and the ability to contribute).

For years I had a poster inspired by the chess game between Max von Sydow and Death from The Seventh Seal as my wallpaper. A few months ago I lightened up: