COPD and Can’t Commit to Quitting Smoking

I was diagnosed with COPD a year ago and have made efforts to stop smoking but I keep buying cigarettes. I have quit for a couple of days at a time and keep going back. I don’t want to let go of smoking because I can’t handle the stresses in my life. I know continuing to smoke will make my life worse but I feel like I just don’t care in the one hand and to no avail keep telling myself I’m going to be even more miserable if I don’t stop. Has anyone else gone through this?