Task: Categorize the tweet's emotional expression, classifying it as either 'neutral or no emotion' or as one or more of the specified emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that reflect the tweeter's state of mind.
Tweet: The ecosystem is meant to break thru the wall of #apprehension. It's easy to follow a fave music star &amp; watch their goings on–but #dentists?
This tweet contains emotions: 
anticipation, fear, optimism, surprise