Setbacks

I'm frustrated. It seems like every time I hit a new milestone in my running, I either get so busy at work that I miss my runs or I get sick. This time, I got hit with both. Last week I missed going to the gym altogether because of work and this week I'm sick (probably from the exhaustion from lack of sleep due to work). By the time I shake off this cold and get back to the gym, I would have missed 2 full weeks of training which means I'll probably have to go back a week or two in my training to try and get myself back up to my last milestone. ARRGHHH! So frustrating.