Hi CM1b7d21, and welcome! I see you are a new member here having joined about 2 hours ago. We are glad to see you are already engaging with the community through this, your first post!
Although you may be new to the community, I see you are not new to the disease, having some 12 years experience managing the COPD/emphysema. Are you being followed by a physician?
There are several approaches to managing COPD depending on your particular level of disease.
In almost all cases though, as you've mentioned, what generally works well are breathing strategies, staying active (exercise, as appropriate), proper nutrition, rest, and one's own particular medication regimen.
We actually have quite a bit of material published, right here on COPD.net, which focuses on each of these topics (and more!). Should you be interested in any of these articles, please let me or any other moderator / team member know and we will guide you accordingly.
Wishing you well,
Leon (site moderator COPD.net)