I have noticed over the past few months that some people say such things as " I feel like I am a failure because ...." or "I am failing because...." ( Fill in any number of reasons ,eg. not running "fast enough", walking during a run, stopping during a run, not being able to complete a run, etc)
The bottom line is that you are only a failure, or failing, if you think you are. If you think you are a failure -- then you are!!! So -- stop thinking those kind of thoughts . Who says you can't have another go, who says you have to run the entirety of a run, who says what is an adequate pace -- stop thinking!!!