Based on the given tweet, determine the level of joy the author is experiencing. Choose from the following options: 0: no joy can be inferred, 1: low amount of joy can be inferred, 2: moderate amount of joy can be inferred, 3: high amount of joy can be inferred.
Tweet: If you simply act out of kindness, strength, and optimism, today will be the best day ever! @Tarleton_KINE @DrKaylaPeak @jssimpson9
2: moderate amount of joy can be inferred