This person becomes happy inside because they have the ability to choose things and make decisions that they were not able to make prior to becoming free. They realize that the world they are living in is not simple and compete, but much more comprehensive than imagined. They also realize the there is so much more to learn in the world. New things are present and this person becomes more open with their morals and ethics, allowing them to become their own individual. But before this happens, there is somewhat of a stage prior to freedom. De Beauvoir explains the five different attitudes.
One of the five attitudes is the sub-man. In the case of the sub man, he is spoon feed and does not have the desire to do things. Page 44 of De Beauvoir's book affirms, " The world about him is bare and incoherent. Nothing ever happens; nothing desires merit or effort." This comment illustrates that the sub man becomes mentally lazy and is a couch potato in terms of doing things in life that are required and relevant. This happens because he is spoon-fed. "Fundamentally as a man's fear in the face of existence may be, though he has chosen from his earliest years to deny his presence in the world, he can not keep himself from existing, he cannot efface the agonizing evidence of his freedom."(45) This shows that the sub human tries to deny and turn away from his freedom, but it is destined for him to triumph over facticity. No matter what, the sub man will not be a sub man forever. He will not always be incoherent and undefined. He will have to be responsible and make decisions on his own. He will gain ethics and eventually triumph over facticity. This is a process that will involve time.
The second of the five attitudes is the serious man. De Beauvoir says that the serious man becomes more focused and in-tuned with the object that he chooses. This blinds him and brings him in "flight" from freedom. On page 47 of Ethics, it says, .