Weed may lead to cognitive degeneration after some time. Just because it's natural doesn't mean it's good. I agree with the magnesium suggestion. Dark cacao has lots of it. One to two cups a day. Another thing that helps is holy basil in teabag or capsule form. Passionflower and coconut oil too. You might want to increase your fat intake as well as complex carbohydrates in the form of rye bread, sweet potatoes and brown rice.