Consistency With Accountability

I was discussing this week with my running friend (whom we will call "J") how when I run with her, I am a full minute and a half to two minutes faster per mile than when I run on my own. I can go out for a solo run with every intention to keep a certain pace or even not care about pace but try to run/walk at specific intervals. Once the miles get harder or uncomfortable, my thoughts tell me "You know you'll have a harder run with J tomorrow, so you can take it easy today." Sometimes I will then only run for two miles and end up walking the last one. I was wondering on Thursday how long I'm going to keep going at this 5K distance. Since the only goal I set was to run or walk a 5K distance three to four times a week, there is nothing set in place to challenge myself to go further. I have become comfortable with ending right around three miles and there is no motivation to run or even walk on my "off" days. With this mindset, I don't believe ther...