When writing in first person, you have to be sure that the reader knows and even likes the “I” character. (at least is curious about the person) Too often “I” stories don’t reveal the character of the “I” person, or don’t reveal it fully.
First person must have a reason for telling the story. Tale telling must be part of his or her character. The strong, silent Clint Eastwood might make a poor first person narrator.
The decision to use first or third person is a narrative strategy. Have a reason for which you are using.