I've lost count of the times I have built something that nobody used or wanted, or failed for reasons outside of the development work itself. While it can be di

I've lost count of the times I have built something that nobody used or wanted, or failed for reasons outside of the development work itself. While it can be disheartening, you can still take pride in doing a good job, you (hopefully) got paid for building it, and you learned some things and maybe wrote some useful code in the meantime that could be re-used somewhere else.