«

Well, even if you would be 30, you're not old. That depends on how you see the world around you. You can stay young with the age of 40 and you can be too old with the age of 30. Enough Germans here that look all 45 years old and when you ask them, they're just 30-35.

If you have many interests in your life and don't become completely too serious about the life you'll stay young as long as you want to.
As example my mom - she's 62 now, but she has the energy of an 40 years-old. Because she knows much and still is very eager to learn new things (although only real ones, not some movies or computer games, rather more scientific things).
So don't think you're old. In fact, just now your time really began.