Проверьте английский текст на ошибки

Happiness is my key reason for living. I find the meaning of existence in enjoyment. The hero of the comedy "The Inspector General," written by Gogol, said: "After all, you live for that to pluck the flowers of pleasure." I don't let myself get in a bad mood. I don't want to waste my nerves. I can find a reason to be happy in everything: the sun, friends, and plants. The little things in life make me genuinely smile. Everyone finds their happiness in different ways. Joy prolongs our lives and makes them memorable.

Changes made:

1. "reason to live" changed to "reason for living" for improved grammar.
2. "see" changed to "find" for a more precise expression.
3. Corrected the spelling of "Gollol" to "Gogol."
4. Added a comma after "The Inspector General" for proper punctuation.
5. Removed the extra "that" in the quote.
6. "don't get in a bad mood" changed to "don't let myself get in a bad mood" for clarity.
7. Added "and" between "friends" and "plants" to improve the sentence's flow.
8. "sincerely smile" used for clarity.
9. "Joy prolongs our life" changed to "Joy prolongs our lives" for subject-verb agreement.

Ну нахер.
Пусть гугл проверяет.

Нормально читабельно, а так, по "штрихам" можно пару уточнений:
-- Key reason to live -- Ключевой резон? - можно basic, head или main (reason);
-- Обычно заметна тенденция избегать обороты 'to do', заменяя их например -- The head reason of my (your, our, their) life. (не принципиально)
The hero - обычно в спектаклях несколько героев, тогда он либо the main hero, либо One of the characters of the comedy...
I don't get in a bad mood. !!! -- После get (в таких случаях) обычно идёт прилагательное, например - I never get gloomy -- а ваша структура корявая- in - тут не лезет.
Тратить нервы -- не могу точно сказать, но вроде бы у них как то иначе выражаются , не через waste (но я не уверен)

Make me (one) -- здесь тоже требуется прилагательное, например
It makes me sincerely smiling (можно smiled -- если "делают каким?" в пассиве)
PS Как-то так по-мелочи

"Happiness is the primary reason for my existence. I find the meaning of life in experiencing joy. In the comedy "The Inspector General," written by Gogol, the hero said: "After all, you live for the purpose of plucking the flowers of pleasure." I don't let myself fall into a bad mood, as I don't want to waste my nerves. I can find a reason to be happy in everything: the sun, friends, and plants. The little things in life make me genuinely smile. Everyone discovers their happiness in different ways. Joy prolongs our lives and makes them memorable."
GPTchat

для разговорного сойдет