Answer:
An internal conflict is when a character struggles over a decision/dilemma in his/her own mind and heart.
Step-by-step explanation:
For example, in The Tell-Tale Heart by Edgar Allen Poe, the narrator's internal conflict is his own insanity, irrationality and fears.
An example of an external conflict in this passage would be the narrator's relationship with the one-eyed old guy. Hope this helps : )!