1. Use first person if you want the entire book to have a limited, personal, and individual perspective.
2. If you want high reader identification with your character, first person is a good choice. Or go with limited third person.
3. If you want to describe your character from the outside, where you tell us "she thought" or "he said," limited third person works well.
4. If you want to experiment and can justify it, choose second person as a modified first person.
5. If you want perspective so readers can glimpse the attitude and feelings of several characters and grasp the plot from different outlooks or perceptions, the omniscient or unlimited third person might work for you.
If you're unsure, write a page or two in each POV. As you look at them and compare what you want to accomplish, ask yourself, "Which of these POVs would be the most satisfying to me?"
You have to decide the POV that works best for you.