Watch more How to Survive Puberty videos: http://www.howcast.com/videos/499533-Emotional-Changes-Girls-Experience-Puberty
Okay, so you're really upset one minute at your mom, and then you go to the Taylor Swift concert with your girlfriend, and you're having the time of your life. You get home, your brother said something the wrong way, and you scream at him. What is going on here, you wonder. You are experiencing mood swings, which are such a normal part of puberty I can't even tell you, everybody goes through them. One minute you're happy, one minute you're upset, one minute you're crying, one minute you're laughing; it's all normal. And the reason is, all the hormones that are responsible for those physical changes that are going on in your body, are also making changes in your mind and emotions, and the hormones fluctuate and go up and down, and your moods go up and down accordingly. All of this is normal and nothing to worry about. What can be concerning is, you may want to figure out ways to deal with it, so your moods don't get the better of you.
The first thing I recommend is talking to somebody that you trust. You can talk to your parents. If you're not comfortable doing that, you can talk to a best friend, you can talk to a coach, a guidance counselor, your doctor, just talk about things that are bothering you, getting something off your chest tends to really help. And also, try not to react immediately. Your poor little brother, if you just yelled at him immediately, take a second, count backwards from ten if you need to. If you don't react immediately you'll find that you can probably make a more level-headed response.
The next I'm going to recommend is getting enough sleep. You need roughly eight to ten hours of sleep at your age, and you're probably not getting them if you're burning the candles at both ends and having so many activities. Try to schedule a time for sleep, it definitely helps regulate your mood swings.
The other thing is to exercise, and I can't express how important this is. 30 minutes of exercise a day will definitely help level out your moods, and make those mood swings less up and down.
The last thing I want to mention is you need to find ways to relax, ways that work for you, whether it's taking your cell phone for a walk, whether it's doing yoga, whether it's watching a television show that makes you laugh, find something that's relaxing. Spend a few minutes each day on something just for you, so that you can level out your mood swings and get through puberty just like everyone else. You're on your way.