Final answer:
The statement advises being selective about sharing personal problems, as not everyone may be caring or supportive.
Step-by-step explanation:
The statement "Never tell your problems to everyone. 80% don't care and the other 20% are glad you have them" advises that when it comes to sharing personal problems, it is best to be selective about whom you confide in. This advice stems from the perspective that most people are either indifferent or may take pleasure in the misfortunes of others, suggesting that sharing problems with everyone might not be fruitful or supportive.
According to this view, it is better to share your problems with trusted friends, family, or professionals who are likely to provide support and assistance, rather than with those who might not have your best interests at heart. The principle here is to protect one's emotional well-being by carefully choosing the audience for one's vulnerabilities.