Your workplace will depend on the specialisation you choose to pursue. If you become a child psychologist, you would have an office in a school or college building, or a slightly more informal, child-friendly setup of your own. Here, you will interact with children all day and help them overcome their difficulties.
If you become an industrial psychologist, you will work out of a more formal office, either your own or a space assigned by a company you're working for. You might have to travel for conferences occasionally. Your hours will be relatively fixed, especially if it's your own setup.