I raise this question not only because I have some doubts about it, but also because of my personal experience.
提出这个问题不仅仅因为我对此有所质疑，也是我个人的亲身体会。

Sometimes the things you do, the way you treat people and the things you love change suddenly. There are times when doing something is like amnesic, but you don't know why.
有时候你做出的事情，对人的方式以及喜爱的东西会突然改变。有些时候做出来某些事像是失忆一样产生了精神断层，可你也不知道为什么。
I once read a novel based on real events -- twenty-four Billy. The mental illness described in it. Billy has twenty-four personalities that do not overlap at all, both Slavic and British. There were naughty children of three years old and young men of twenty. Even every personality has its own gender, or male or female.
我曾经看过一本根据真实事件改编的小说——《二十四个比利》。里面所描述的精神患。比利拥有二十四个完全不互相重合的人格，这其中有斯拉夫血统，也有英国血统。有三岁的顽童，也有二十多岁的青年。甚至每个人格都有自己的性别，或男或女。
My point is, whether you've been to a psychiatric hospital or not. You can potentially have another person in your heart, but there's nothing to make them appear.我的观点是，不论你去没去过精神病院检查。你都有可能潜在的拥有内心的另一个人，只是有没有事情使他们出现罢了。
What do you guys think？