"..The soft,sun-kissed sand" is alliteration. It has the same letter/sound at the beginning of the words. I think alliteration is used to enhance the adjectives (which are being used to enhance the noun).
Another one is personification (The wind is not actually hissing).
personally i think it means while in isolation we spend a lot of time thinking and being alone getting to trully know oursleves and do or like things we never thought we would.
