reach for the sky

1. Put your hands up high, as in One robber held the teller at gunpoint, shouting “ Reach for the sky! ” This usage is always put as an imperative. [ Slang ; mid-1900s]

2. Set very high goals, aspire to the best, as in I'm sure they'll make you a partner, so reach for the sky . The sky here stands for high aspirations. Also see sky's the limit .