Yes,the essay, Practice and Upload Positive Attitude, used a persuasive language because the intention of the essay is to convince us to do something. The author also wants us to believe that the pointof views shared in the essay is true.
"I strongly believe that we must come together to practice and upload positive attitudes toward work, life, and challenge."
This sentence asks us to do what the author wants us to do towards life and its challenge.
"Doubtlessly, this will make our lives better. There is a strong possibility that this can make the world a better place to live in after all."
The author wants to believe as that we can make this world a better place with the principles he shared in the essay.
