I've got three organized rides coming up two weeks apart starting 12 April. I really want to do the Century on the 12th, but it's got a lot of climbing (for me), >6000'. February was a slow month mileage-wise due to a bit of work and some rain; the result was a case of the cycling blahs. In preparation for these longer rides I dropped my small chain ring to a 26 and changed my cassette to a 12-27. Yesterday had the best climbing ride I'd experienced in quite some time: 48 miles and 3300' of climbing feeling pretty fresh at the end. The 26-27 was plenty low enough for the two mile stretch at 10%.
It's probably a bit of a disease that even as I get older (I'm 68) I feel a need to push myself, but it's so darn gratifying when you test yourself and succeed. Failing ain't so bad either, just happens in life.