Task: Identify the primary emotion conveyed in the tweet and assign it to either 'neutral or no emotion' or one or more of the provided emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that best capture the tweeter's mental state.
Tweet: “Set a goal to achieve something that's so big so exhilarating that excites you &amp; scares you at the same time.” \n― #BobProctor
This tweet contains emotions: 
fear, joy, optimism, trust