"Go long. Go for the mile repeats. Go for the recovery days. Go stride it out. Go it alone. Go with the friends who demand as much out of each mile as you do. Go because there isn't anybody who can take it away from you when you're done. Go further than you did yesterday. Go because you can. Let's go."
If that doesn't motivate you to run, then I don't know what will. There aren't many things we can control in our lives, but we can control what we put in our mouths and what we do with our bodies. I suggest you take advantage of this.
July 1 may not be a new year, but it does mean that half the year is over. There is nothing wrong with making a mid year resolution. Make the second half of 2015 the better half of the year and start thinking about your resolutions now!