How do you stop your hair from looking messy?

You brush it or comb it.

Brushing it and combing it is a good idea, however, that only tames it. If you want it to be soft, and shiney, try straitening it, or curling it. Don't let it get too greasy, cause that's what makes it look stringy and messy. Also, and most majorly, USE CONDITIONER it helps a lot, its what makes it soft and smooth.