Hi play66, welcome aboard! of course, the first time you hear of this diagnosis you get scared.Indeed ask details of your condition to your doctor and to the BLF (They produce leaflets for each condition).
I had bronchiectasis (part of the progressive obstructive lung disease) since 1994, I was 44 (I'm 65+ and still love life). Keep as active as possible, even if it takes more time to be active; make allowance for that.
I don't go very far these days, but I still go to the gym and I have just taken singing with a COPD group, which I enjoy very well, as others in my category semm to do too! There's a bloke in our group that can keep a note for very long - I'm envious of him!
Have you been referred to a pulmonary team nurse? If not, that would be the best thing ever, because those kind of nurse are very competent in lung disease. They can refer you to a physiotherapist to give you practical advice on how to breathe. they can put you on a six weeks exercise sessions, after monitoring your abilities. They re the best thing after Polo mint!
You can talk to them about your anxiety too. Yes, at first we don't know what hits us.
Oh and also, you are so brave to have given up smoking, that was the best step you took. Be in charge of yourself and your lungs will love you! Tell us of other questions you might have, because we do suffer, but we somehow live on! You can do that to!