Depending on your goals, each frequency may help you achieve those at certain times of the day. For example, if you are trying to calm yourself down and relieve stress before you sleep, try listening to 174 Hz in the evening before bed.
Or, as you sleep, you could listen to 528 Hz frequencies to promote DNA healing. As your body heals itself the most and resets during the night.
During the day you might want to increase your focus and creativity, so listening to 417 Hz might boost your cognitive ability.
As you can see, you can get creative with how you use Solfeggio Frequencies. Each person differs from one another, so everyone might have different benefits from each frequency. Never be afraid to try out each one and see how it might help aid you.