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: But is it your fault you worked hard and stayed the course until eventually it all paid off, no! so let it be known and count up!
This tweet contains emotions: 
anger, optimism