Increase your expectations appropriately as she gets older. Offering choices about food, toys, or activities gives her a sense of competence and respect. A scraped knee is a good teacher about the consequences of running too fast on a slippery floor. A child who spends money on junk food might learn that there isn't any left over for something else. Of course parents need to protect their children from dangerous consequences like running onto the street and prevent physically aggressive behaviour towards adults and other children.
Parents often get into the situation of repeating requests many times.
I tell him 100 times and he still won't listen. Children have a hard time stopping an activity that's fun and interesting to do something that isn't, and a consequence of repeating things over and over is that they learn to ignore you. If this is a situation that you face there is something you can do about it. You can teach them another consequence by giving them only one warning and then moving to make sure they do what you ask. What they learn from this approach is that by not respecting your request promptly they lose the freedom to act on their own.