Dear @chbartist sir!
Yes indeed if there is a desire to learn inside us, many inspirational people will be present in history, who have fought themselves in the category of successful people while facing the odd circumstances. As Jan Koum did not give up even patience in extreme circumstances and brought himself to the line of successful people through little resources., Jan Koum people remember because of WhatsApp,Facebook. But there are many people who succeeded but were not the subject of discussion. Talking on a small scale, we can find examples of many people around us who have touched the heights of hard work and perseverance in adverse circumstances.