Influences on running

The obvious - physical well-being, the weather and the right shoes. But emotion?

I have had an awful weekend of feeling angry, disappointed, slightly fearful and miserable and today I am just plain exhausted. Too weary to even contemplate running. I know if I'd got up off my fat arse and just gone for a run it would have been fine, but no, I woke up 20 mins later than normal and that meant I would not be running.

It's no great deal this not running, I'm really not obsessed, it's not the be-all and end-all. I would be unhappy if I couldn't run cos of some injury or other but missing the odd day doesn't matter.
What does matter is that feeling highly emotional has meant that I didn't make the effort.

Perhaps I am just very weak willed and as such will never get round this flaming 1/2 marathon... I need some kind of inspiration which makes me ignore the tears and the anger inside and the aching muscles from overdoing the gardening and just get out pounding the pavement.