Anna's Answer: It is perfectly normal to feel like this at times during puberty. You may have some worries about the way your body is changing. Also the hormones, which cause the physical changes in your body, also affect your moods. This is partly why you can sometimes get really upset about something that would not usually worry you.
Feeling angry is normal during puberty because of the hormonal changes. In fact, for the same reason, many women get edgy right before their periods.
'Mood swings' are also common throughout puberty. This is when you feel really happy one minute and then really angry or even sad the next minute. So if you're feeling angry you may want to count to 10 (it works!) and think about it before you shout at your family or friends.