A person can only succeed in his career if he works hard and hard; he can have happiness in life only if he succeeds in his career. However, if he works hard, he must have the courage to bear pain and hardship. Unfortunately, some people in the world are very afraid of pain With difficulties and unwilling to bear them. Based on the above information, which of the following can be introduced? ['If you have the courage to endure pain and hardship, you can succeed in your career.', 'If you have the courage to endure pain and hardship, you can get happiness in life.', 'Some people in the world can succeed in their careers and happiness in life.', 'Some people in the world cannot get the success of their career and the happiness of life.']