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: #ArchangelSummit @sethgodin  Anyone can be brave but you just have to last 5 mins longer than everyone else. #leadership #fear
This tweet contains emotions: 
fear, optimism