Stop Smoking Immediately With Herbal Solutions

online places to buy the following medicinal herbs?

comfrey leaf, st johns wart, calendula petals, and plantain…i’m not having any luck.

What are good herbal remedies for anxiety?

I am without health insurance, and suffer from moderate anxiety/depression (diagnosed by my doctor) and am looking for information on herbal or natural remedies to help calm my anxiety. I have tried st. johns wart more than once, and didn't notice any difference, and I am looking for other herbs and such that might help, preferably with knowledge from experience.