A conflict is a struggle within the mind of a single character.

An internal conflict.

Explanation:

Any struggle in the character of a story or literary work is called a conflict. There may be numerous ways of conflicting interests in a story, some even involving nature or society etc. Though there are primarily two types of conflicts that are based on the characters of the story, they are on opposing sides. An external conflict is the struggle faced by the character / characters against anything external, be it the weather, society or another character. Whereas, an internal conflict is the conflicting struggle of the character's own nature, occurring within himself, without the involvement of anyone or any external force.

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In an external conflict, a character struggles against an opposing force such as another character, society as a whole, or a force of nature. An internal conflict takes place within a character's own mind. It is a struggle between opposing needs, desires, or emotions. The way writers create characters in a story.