It depends because there could be different reasons to not tell about your suffering to others. When you have an illness or know something bad has happened, keeping it to yourself, or not sharing with others might be good for them. On the other end, people in most cases want to hear if something has happened, and not telling the truth might be bad to do. Suffering together is also better than suffering alone because you unite and can share feelings. It isn’t brave keeping something for yourself if you have the opportunity to share it with others. Therefore it could be brave to suffer in silence, if the fact that you do this is also a suffering and shielding of someone else.