I've always felt more people should spend some time in sales to harden their skin a little bit. Anything, including running a startup and being successful is a

I've always felt more people should spend some time in sales to harden their skin a little bit. Anything, including running a startup and being successful is a numbers game. If you change your mindset from, "Oh we got rejected, we must be doing something wrong." to "Oh we got rejected, it just means we're now closer to getting accepted by some other incubator, VC, angle investor, etc." The guys I worked with in several startups took rejection as a badge of honor. It just meant you were getting closer, not further away from your goal.