Some of you may know that about 8 weeks ago I returned to running after a 13 year break. In that 8 weeks, I have lost a stone in weight, had much more energy for work (and play), met a few new people and had lots of conversations I would not normally have had (because all sorts of people run). This is quite apart from the highs that come after a good workout and the chance to get outside three to four times a week.
Why am I saying this? Well, when I was younger I was too obsessed with times and pbs to actually enjoy what is a great sport but now I can appreciate it. If you are on a plateau, remember that it could be worse - you might not be running at all.
Also I just want to say what a nice bunch of people runners are :-)