What would you add to this neat 10 lessons? Maybe as well as not giving up, the ability to turn the negative into a positive would be one I’d add. For example you might get paid less than you’d expected, because you didn’t agree the rate for the job in writing. But you get something more valuable to compensate, such as insight into an area you’d long been interested in exploring it’s potential. So then you can chalk the work down as free market research!