<human>: I've been overweight most of my adult life. Every so often, I'll start calorie counting and exercise in an attempt to lose weight but there always comes a point where something happens and I stop and keep pushing off starting.

Last summer, I was doing great. I was eating healthy, trying to complete the C25K and then I got shin splints. I kept walking but avoided running. Started a medication that made me depressed. Then got myself sorted and tried to start again after Christmas. Lost 15 pounds was doing great again then started getting stressed with school and having panic attacks. Gained all the weight back.

Now, I'm out of school for the next four months and am determined to lose some weight and get into a mindset where I can continue to be healthy once school starts. I started C25K from the beginning again, it was cold and raining but I went for a run. But I'm worried that once again I will derail my hard work.

So, I guess my point is, how do you keep going when it seems impossible? I know it seems small but I have a tendency to get into the defeatist attitude when I fail. The other issue I have is that I tend to obsessively restrict calories to a point where it is unsustainable and then binge. I know it's unhealthy but I can't stop it.

Can you provide a brief overview of the text?
<bot>: I have a tendency to derail my diet/exercise plan and then give up. How do I fight my own defeatist attitude?