Turns out you could do with Nettle, and a lot of it. I'm afraid you're max-level-stressed. This means you've been going through stress for a very long time indeed. It's worn you down and now you need to concentrate on nourishing yourself, taking time to rest and relax. Nettle is like a food. It's high in Vitamin A, B, C, D and K as well as iron. It can be drunk as often as you want but you should have it at least 3 times a day. It'll take a few months for this to build up in the system and you might want to see a herbalist. It's likely that you need some personalised advice as Nettle is a tonic best combined with relaxants and adaptogens in this situation. You can find out more about seeing a herbalist by clicking the link below. 

Always consult your health practitioner before trying a new herb.