Cut the chicken breast into bite-sized pieces.
Julienne the onion and carrot.
Heat oil in a pan and stir-fry the chicken breast.
When the chicken is halfway cooked, add the onion and carrot, and stir-fry together.
Season with soy sauce, sugar, and minced garlic.
Stir-fry until all ingredients are fully cooked.
Serve the stir-fried ingredients over rice to finish.