The most useless number in the world is your age.  There are a lot of numbers that you need to know: what's in your bank account, your monthly income, monthly spending, etc.
Good numbers are numbers that you can change.  Age therefore is completely irrelevant.
Everyone has a purpose and a contribution to make in this life regardless of how old they are.
Colonel Sanders started Kentucky Fried Chicken at age 67.  It's never too late.
Get yourself in gear and get out there to reach whatever goal you have and contribute to those around you.  Now is the time!