Answer and Explanation:
We cannot mention the experiences that King had during his life, without mentioning the moment when he witnessed his friend being hit and killed by a train, when he was a child. Although King claims that it did not influence him at all, we cannot fail to affirm that this is the moment of horror that he lived and that is directly related to his work, but that he can have an influence, even if it is only in the subconscious of King, being exposed when he allows his characters to experience shocking and traumatic moments.
Another experience that King had was the economic difficulty in supporting a family. King married and had children in his youth and had many difficulties in being able to support his family economically. He and his family went through many hardships in relation to money and because of that, King had to deal with the uncertainty and fear of what the future would hold for them. This may have influenced King's work to present very human characters, that in addition to facing supernatural problems, they must deal with real problems of adult life. This allows many readers to identify with the characters.
One last experience to be mentioned is the problem that King faced with alcoholism and drug addiction. This may have been King's most difficult experience, as it made him lose track of reality, a good relationship with his children and wife and the dominance of his life. King's characters constantly deal with these factors, which shows that much of what he writes reflects King's own problems, which makes the work even more palatable, as he manages to write about something he really knows.