Matthew Henry (1662-1714) is most famous for his commentary on the whole Bible. But his book of prayers, A Method for Prayer, has proven to me to be an equally valuable resource. If you've worn out your copy of The Valley of Vision (another much loved book of Puritan prayers) here is a fresh spring in which to refresh your soul.
I first heard of the book throuh this website which I used regularly for at least a year.
But the book has much more content and can more easily be made part of your devotion time.