I liked this book lots. It's full of practical advice, principally for allotment holders, but the ideas can be applied to your garden.
Some of it so obvious you think 'why didn't I do this before?'
The crux of the book is that you dedicate 30 mins, 5 days a week to your allotment/garden, with weekends off. Or you dedicate the same time, 2.5 hours at weekends.
It advises that you plan what you do with your time, and you grow high value crops, as opposed to the run of the mill variety you can get in your local shops.
I've been gardening for years, but haven't done much with fruit and veg, so this year I'm applying what I've read. So far, the results have been encouraging with far less guilt, stress and strains.
Almost anyone can find 30 mins, and on a regular basis it can make a big impact on almost any plot.
Great book.