From a Feng Shui perspective, the placement of the bed will have a greater impact on people. According to the date of birth of a person, it can be divided into East Four Life and West Four Life, and their auspicious positions are different; of course, the bed must be placed in the auspicious position that suits you. You can search on Baidu for details. As for the size of the bed affecting a person's destiny, it cannot be said that it does not necessarily affect it, but it can be ignored, because the size of the bed is standard, unless you get a bed for the opposite sex, then that is a different matter.