Nature

 Summer afternoons and winter nights give out same vibes where consciousness is silenced and minds take a look deep within, inside the souls and a look far beyond, beyond the stars.

This makes me realise that we may be very ambitious for our goals but the human within us craves for nature, as it's a goal. Our biological clock syncs with nature's clock. 

Any withdrawal from the sync, be it sleeping not on usual time or not seeing nostalgic spring is noticed.