If reading books about prayer rather than praying was evidence of a vibrant prayer life then I may qualify. Sadly, like almost every Christian I know, I long for a much fuller and deeper life of prayer. However, reading books about prayer is certainly a step on the road and if I was writing a list I would include many that are here. There are three on it that I haven't read.
One I would add is a very thin and simple book by Bill Hybels called 'Too busy not to pray' which has probably impacted my praying more than any other.