Answer:
Born of sorrow, grows with age, you need a lot to be a sage. What is it?
What time of day, when written in a capital letters, is the same forwards, backwards, and upside down?
I make you weak at the worst of all times. I keep you safe, I keep you fine. I make your hands sweat and your heart grow cold. I visit the weak, but seldom the bold. What am I?
I am an activity dogs are very good at when a ball is thrown.
I have a straight back and sharp teeth to cut objects.
No matter how little or how much you use me, you change me every month.