Acharya Prashant explains that the constant desire and planning for happiness are the very things that prevent one from being happy. He points out that for years, people have tried to achieve happiness through planning and future goals, yet this approach has proven futile for everyone. When one plans for happiness, they are essentially reinforcing the belief that they are not happy in the present moment. This constant focus on a great future implies that something is wrong with the current day, leading to a perpetual state of unhappiness. He emphasizes that the one who is truly happy does not want to be happy; they simply are happy without any conditions or ten-point charters.