"I like to smoke at night to help my anxiety, but cannot throughout the day. What would be a good alternative to doing so?"
You can use vape cartridges which are often a lot more discreet than smoking, however that is still noticeable as you are still exhaling a vapor. I would try either a CBD edible, tincture, or spray.
Oral sprays are actually really really convenient. You just spray a mist into your mouth a few times and then you are all set in a bit. I also believe they are absorbed into the body through the capillaries in your mouth and, as a result, make it into your body a little faster than just ingesting the CBDs.
I would check out this product from Kushfly: https://kushfly.com/goldcart-cbd-spray
Goldcart has a really consistent delivery system and the vial is small enough to bring with you anywhere.