The same way I cope with change in general: by adapting. Which is the approach I think we should be taking in general as a society towards climate change.

> I'm addicted to my comfortable, wealthy lifestyle as a software engineer and I'm ashamed of it.

You shouldn't be. Most people in the world demonstrate by the choices they make that they prefer a more wealthy lifestyle to a less wealthy one. There are people who don't, but even most of them depend for some essential functions on technology that is only possible in a wealthy society. (Anyone who really doesn't depend on technology for anything won't be posting here or reading posts here anyway.)

Human activities can certainly affect the environment, and not just the climate. IMO the hysteria over climate change has had the unfortunate effect of putting many other more pressing environmental issues on the back burner. We should be good stewards of the environment, but that requires being as objective as we can about how much priority issues actually deserve, and also requires recognizing that the best way to fix environmental issues in general is to create more wealth. The wealthier the world is, the cheaper fixing up the environment becomes in comparison.