Smoking the buds seems to produce an anti anxiety, pain relieving, and anti psychotic effect for me when I'd get it from smoke shops and dispensaries but the gas station edibles or shit you'd find at a Whole Foods boujie store not so much.
It's interesting to hear that vaping a small percentage of CBD oil didn't help with focus or calmness, but a higher percentage in the form of CBD joints seemed to work better for you. Deep breathing can certainly enhance the overall calming effect, as it's a great technique for relaxation. As you mentioned, there are limited studies on CBD, and individual responses can differ, so finding what works for you is key. For more insights and information on CBD and its potential benefits, you might want to check out more details from the cannabis statistics in the UK. It can provide a broader perspective on the subject.