What is a one-sentence summary of the following article?
When you regularly feel left out or ignored, you might begin to wonder if you're doing something wrong. However, remember that you can't control what other people do, and that their actions say more about them than they do about you. It is not your fault that your sibling is getting more attention than you. Try to look at things from your parents' point of view. Think about why they might be giving your sibling more attention, and remember that it is not necessarily about anything that you are doing (or not doing). For example, maybe your sibling is a lot younger than you and still needs extra support, or maybe they just need more help with certain things than you do. It's also possible that your parents aren't aware that they are treating you differently, or that you feel this way. Physical activity is a great way to start feeling better. When you're walking or jogging, you can let your mind wander and not focus on feeling left out. Doing exercise also makes your brain release endorphins, a type of natural chemical that helps you feel better. Take a pen in hand and put your feelings to paper. It doesn't have to be a good piece of writing or a work of art. When you write your thoughts down, or depict how you're feeling with a drawing, you take control of your feelings and stop them from having a hold over you. If your parents are more focused on your sibling, it means that you have license to do what you want. Your parents may be less strict with you, and you'll have a lot of time to pursue your interests. Use your freedom to learn more about the world around you. Work on your hobbies. Read, dance, write, paint, play an instrument, or play sports. Spend time with your friends. Talk on the phone, text, and IM. Get outdoors. Taking a walk or hike, or exploring your town, can be fun. It's okay to feel overwhelmed. Crying makes you feel better and there's no shame in it. When you cry your body produces endorphins - these are the body's "feel-good" hormones; they're there to make you feel better. Don't be afraid to be seen crying by your parents or siblings. Crying not only makes you feel better, it also brings you closer to the people you love. It may help them understand that you're having a hard time, too. Acting out may feel like a natural response if you have feelings that you just can't express, but doing so will only make your parents frustrated with you. Don't assume that your parents will read your mind and realize that you want affection. You might be punished for acting out. This could mean being sent to your room, or being grounded, or losing cell phone privileges. Instead of getting attention, you'll only end up isolating yourself from your parents and friends. Just as you didn't choose to get less attention, they didn't choose to get more of it. They may even wish they could have more freedom like you do. Resenting your sibling can lead to a lot of stress for the both of you, so try to keep a good relationship. Your sibling can be someone to turn to if you need emotional support; if you're supportive of them, they'll be more likely to support you when you need it.

Summary:
Avoid blaming yourself. Put the situation in perspective. Go for a walk or jog. Write or draw. Enjoy your freedom. Cry if you have to. Don't act out, even if you're really upset. Avoid blaming your sibling(s).