Hey c:
I hope you are feeling OK today.
I'm very high energy too and for me that leads to stress and anxiety and worry, so in a small way I know what you are going through.
Do you have any local friends or friends on Facebook or online you can call on the phone or Skype with and speak with? Not just texting and messaging but actually talk with. If not, journal privately on a blog to get the ideas out of your head, so you can actually see them in front of you. Keeping things in the head, they'll just go around in an endless circle and lead to more anxiety and stress. (that's part of the magic of talking to a counselor).
That usually helps me if I'm in a stressful situation to find my balance again. After talking to a friend, I usually feel very happy again and go on with my day.
Another thing, get physical, get up away from the computer and do something which engages your body, not just your mind. Get out and run or jog, do yard work, house work. Anything physical or strenuous will cause your brain to devote resources to the labor and take your mind off whatever it's worried or anxious over.
There are some really good online forums where you can talk about anxiety and what you're going through and others who are going through the same thing will offer emotional support and comfort.
http://www.mentalhealthforum.net/forum/forum22.html
Just google 'anxiety forum' and you'll find so many more.
Many of these forums have professional counselors as moderators and there will always be someone there to talk with you 24/7 and help you through whatever you are going through.
All these ideas help me. And, I hope they provide you with some help too.