Be carefull with the caffiene, it does promote anxiety. I would also possibly opt for a healthier snack, like maybe an apple or some blueberry's
I agree on the coffee, it makes me too "slightly hyper," "alert" and "anxious" at the same time. The only thing I want from caffeine is to be alert, and not the other two as I think it tends to stymie my reasoning ability.
A little caffeine in the morning won't hurt though, green or white tea is EXCELLENT for this reason because compared to a cup (8 ounces or so) of coffee, there is only maybe 6-25 mg for white tea and 15-30 mg of green tea VERSUS 80-176 mg of caffeine in coffee (source:
http://wilstar.com/caffeine.htm)
The problem with coffee, is that it gives you too much all at once, especially if you have a low tolerance for it which is not good.
Besides, green/white tea has that clean taste to it, has tons of antioxidants (squirt some lemon juice into it to stabilize the EDTA antioxidants in it!), and has the amino acid l-theanine in it which is a mind relaxant (
http://en.wikipedia.org/wiki/Theanine#Effects_on_the_brain)
Also, a good place to get excellent loose-lea tea (it's better to brew in a pot when it's not in a bag as there's more surface area), is from
www.adagio.com. Try their white/green teas, prices are the lowest I have seen (better than retail and amazon), and their selection is excellent. Then just put the drink in your water bottle (add lemon juice so the tannin basic taste is balanced out which can get bad if you let it stand) and sip throughout the day (obviously you'd need to brew more than 8 ounces probably 20 ounces-32 ounces if you want to have a steady low flow of caffeine throughout the day).
Word of wisdom by an Asian man who drinks tea.
Also, don't buy the sugary gop **** that are in stores, they're not that good, don't have that much green/white tea as they do corn syrups in them.