I'm currently fighting cancer with Cannabis and one of the side effects of such high doses of THC is anxiety, and it has been crippling for me at times. I can't stop taking my meds so I have had to find ways to deal with it. As
@Deadstill mentioned, and I wholeheartedly concur, the CBD will help with your anxiety and has helped me much. I take it alongside the THC.
Perhaps the best thing I have found for helping with the anxiety though is to find strains high in the terpene
Limonene. I am already looking for anti cancer and anti tumor
terpenes in my flower and it just so happens that
Limonene is also a good anti cancer terpene. When my oil is made from strains with lots of
Limonene my anxiety is pretty much non existent. Another good one, while not specifically used for anxiety is
Linalool which is good for sleep. The two together are, at least to me, an anti anxiety powerhouse.
I would also add that you may want to do a bit of research and find other
terpenes that help with anxiety, I would bet there are others.
Good luck and happy growing!