Cold care confused

Patient: I have had many colds during the years and i thought that I was doing things write with taking my meds and relaxing,but according to a friend he thinks that I was doing it all wrong. But, right now I have been experiencing for the past 2 days and I know this is gonna be a dumb question but i just want to know if what i have doing over the years has been right or if my friend was, when you have a cold doesn’t relaxing and taking it easy help your body’s immune system fight off the cold or does walking around town help?