Even a happy excitement can cause mental and physical stress. Engaging in some sort of physical activity engages both the mind and body while producing a calming state afterwards. If you are overly excited, working out may help you to burn off the extra excitement and relax you.  Try going for a walk or a run for about 20 minutes. This may seem like a short amount of time, but not much exercise is required to alleviate stress.  You can combat extreme mental chatter by doing a more intensive workout, such as playing sports, engaging in a high-intensity interval training, or doing power yoga. Being cooped up inside will make it hard for you to get your mind off what's got you excited. Take a break from what you're doing and get out in nature.  Spending time outdoors actually just makes humans happier. Science reveals that even short nature walks can reduce depressive feelings, boost your outlook on life, improve your body's ability to fend off illness, and enhance focus (which you could definitely use right now).  You can opt to go outside alone or invite a friend for an even better distraction-booster. The two of you can go for a walk in the park or toss a ball around in your backyard. You can listen to soothing music to ease your excitement as you perform some other task. Or, you can turn on something fun and get on your feet. Jump, clap, shout or dance.  Getting your body moving by dancing to some music will generate those feel-good endorphins that come with exercise. But, you will also benefit by tiring yourself out physically to fight the over-excitement. Maybe after a fun dance session, you might want to take a short nap.

TL;DR in Vietnamese:
Tập thể dục để đốt cháy nguồn năng lượng gây lo âu và giúp bản thân bình tĩnh lại. Ra khỏi nhà và tận hưởng không khí trong lành để thay đổi cách nhìn nhận về vấn đề. Nghe nhạc và nhảy nhót.