What does the red mean?

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Making decisions solely based on money
A good offer with a high salary can often be hard to refuse. However, it’s best to really think about your career decisions, and not make your decisions solely based on how much money you are going to make. As important as money is, you will also want to enjoy the job you are doing. If you are faced with a decision between taking a job you would love, and a job that pays a lot but you probably wouldn’t enjoy, you may find that the bigger mistake would be making more money doing something you hate. Also, even though jobs with more responsibilities often pay more, this isn’t always the case. Sometimes you may be better off taking a job that pays less but will teach you more skills and is more visible, rather than a job that pays more but has no opportunity for advancement.
According to Salary.com, especially when you are taking a filler job, you need to be careful to know yourself. If you can handle a soul-crushing job, then maybe you will be fine. But if your self-esteem will be damaged, then you may need to pass on the job. Also, while a job may pay well, you may get stuck in the job and neglect your other career goals.