TODAY IS my birthday, and I’m turning 46. It’s a fabulous age: you know you’re old enough to know better, but young enough to still learn more. I'm thinking how quickly I got to this age, since I seem to have just been celebrating my 45th birthday recently. Now I understand why the first 30 or 35 years of your life seem to be the longest and slowest--you spend all that time building up a cache of dreams, hopes, triumphs, regrets, fears, and tears. Turning 46, I’m glad to look into that cache that's now filled with experiences and wisdom, and even gladder to know that I've reached this age pretty fast and pretty well!