Hi,
Many thanks to everyone who took the time to reply to my original post and thanks for your encouragement.
You'll be pleased to know that I went out earlier tonight and did quite well.
I ran 5k in 36mins which is a personal best and also an 11min mile, also a P.B.
I was pleased with both.
I can say that my mojo seems to be back; let's hope that it's here to stay!