It is necessary to share your feelings with others. Sharing your feelings helps you to get closer to people you care about and who care about you.
Sometimes it can be really hard not to tell anyone that you're feeling sad, worried, or upset. Don't keep feelings locked inside. If that, it can even make you feel sick!
But if you talk with someone who cares for you, like your mom or dad, you will not be all alone with your problems or worries. It doesn't mean your problems and worries go off, but at least someone else knows what your trouble is and can help you find ways to do with it.
If the person doesn't understand what you mean right away, try explaining it in a different way or give an example that has something to do with you. Of course, there are many ways for you to speak up your feelings. If you think you'll have trouble saying what's on your mind, write it down on a piece of paper.
Some of us, just like some adults, are more private(有隐私的) than others. That means some people will feel shy about sharing their feelings. A kid doesn't have to share every feeling he or she has, but it is important to share feelings when a kid needs help.