Here are a couple suggestions that may help:

Energy-V
http://mynsp.com/herballure/products/guide.aspx?stockNum=875

Of course, finding the root of the issue would be the best approach. You could have low T-3, circulatory issues, iodine deficiency, high homocysteine, adrenal issues, etc.

If you want to get off of the caffeine, here is something that I personally use that takes about 80% of the difficulty away:

Caffeine Detox

I love coffee. Unfortunately, caffeine is horrible for your health, especially in the long term. I only have coffee about once every 6 weeks.

All the best.