Task: Determine the appropriate intensity class for the tweet, reflecting the level of emotion E experienced by the user. 0: no E can be inferred. 1: low amount of E can be inferred. 2: moderate amount of E can be inferred. 3: high amount of E can be inferred.
Tweet: #lesson from @KevinHart4real #book I'll apply:  In #life U always have a choice.  Kev had grimey things happen &amp; he #chose #optimism
Emotion: joy
Intensity class: 