The most important takeaway and why I think everyone should do a stint of knocking on 140 strangers’ doors. — Ah, sales. For many, sales is a nightmare. Commission? EW. Talking to random people? F*ck that! Funny enough, it’s also highly lauded by many successful entrepreneurs, and they attribute it as being crucial to their success. Well, I decided to give it a try and after about a month of…