Task: Classify the mental state of the tweeter based on the tweet, determining if it is 'neutral or no emotion' or characterized by any of the provided emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust).
Tweet: Theme of week: Ask the Lord for strength &amp; perspective to persevere in #integrity and effort, despite being #disheartened &amp; disappointed.
This tweet contains emotions: 
joy, optimism, sadness