Being a founder is like "chewing glass" "When you spend six months recruiting a candidate and they don't join, that's chewing glass. When you spend a bunch of time working on a product that gets completely washed over by the next model and makes you feel like an idiot for expending all that time and capacity on something that was the wrong call, chewing glass. When you get rejected by 40 investors in a row before you're able to raise capital, chewing glass. My experience of startup…