I think when you've been a runner it's hard to come with terms that you're not at the level you used to be. Going for a short run just seems lazy and you feel you should be doing the same mileage and speeds you used to do.
What I'm trying at the moment is I've been looking at beginner schedules and just trying to stick to the sort of mileage as if I was a complete beginner and building up from scratch again, the result at the moment is I finish each run feeling great and wanting to do more hence I'm looking forward to going out running again.
I think in previous attempts at a comeback I've tried to do too much too soon and then ended up back to doing nothing.
See you there, Red Stripe. I'm thinking It may have been a bit rash signing up for the full distance swim as just started new job and not getting much training time or too tired to train. On the plus side I'm getting a good workout at work and losing weight without trying.
Hopefully things will get easier as I get used to it or I can change the distance. I had a one to one swim session with a local coach and have noticed some good improvement.