In a medium-sized bowl, combine the chopped soft-boiled eggs, mayonnaise, dijon mustard, and parsley. Mix the ingredients well until the eggs are evenly coated with the dressing. Season the egg salad with salt and pepper to taste. Adjust the seasoning according to your preference.
If you like a creamier texture, you can add more mayonnaise. Refrigerate the egg salad for at least 30 minutes before serving to allow the flavours to meld.