Hi Rosie,
I have been running 'again' now ( used to run at School nearly 30 year ago) for a couple of years. My weight had balloned to over 18 and half stone + , I used to get out-of -breath very easily, so I took up jogging along the canal by where I live and last time I weighed myself I was under 13 stone, ( 181 Lb) result
. I also have mild bouts of depression and running helps combat that, it keeps me calm and happy in a ever stressful world. A run also puts a bit of colour back in me pale cheeks and gives my lungs a workout. What also helps me keep motivated is I realy do enjoy/like running, I watch it on the telly, buy the odd running mag' when I can and also go online and check out stuff, eg 'Fetchevery.com', ( same name on there, Tony D). Just look at some of the fit women runners like Kelly holmes, Denise Lewis Jade Johnson, Kelly Sotherton etc. I'm also a member of a great club -Wolverhampton & Bilston AC, by that I mean they are ALL really supportive there. I also vary the time of day I run, the route/course I run, and the surface I run on. Also booking-up a run, near or faraway, ( 5k 10k whatever) in say two or three months time may help keep you motivated especially when you get your number threw the post, you know you have to do some training then. In 1985 my Dad died of a heart attact a week after his fifty first birthday so running for me is like a life insurance, if I stop running I could might die sooner than if I did'nt run, and I have a little two year old daughter now, so I want to stay healthy for her aswell.
Good-luck & best wishes, T