Figure out the cause of stress. The logic is simple. If there is a problem on a certain area in your life, you work it out and do something about it. We live in a very stressful world and stress is everywhere. It could be our job, relationship and other things wherein we involve ourselves with. Figure out the cause of your stress and try to fix it. No matter what you do, it should be direct to the point.
Change your habits. The problem with us sometimes is that we already figured out the cause of our stress but we do not do something about it. If the problem is there and we have already fixed it, then the next thing that we need to do is change our habits. Do something worthwhile that you have not done before. Put excitement in your life by learning new things. This will reduce stress and help you avoid those jitters in your life.
Doing something about your insomnia is important. There are insomnias that stay for a long time and there are some that will only stay shorter. No matter how long it will stay in your condition, it is still an additional burden to you that is why you have to do something about it. I went through the process and I found it very effective. Try it yourself.