We are old when we are not young anymore. There are three key areas that qualify youth:

1. Growth: if you are still growing physically, mentally, spiritually, financially, socially, or any other aspects that matters to you, then you qualify for this factor.
2. Thinking for the future: Do you still dream about your future? Do you have an idea that you haven’t started/finished yet? Do you still have places to go, people to meet, or events to attend? If there is anything that you still long for, you are still young.
3. Strength: You have the mental and physical ability to work on your project. You don’t have to be perfect. As long as you can work on something no matter how small, you still have a future to work for.

Defining whether you are young or not by age is a limiting factor. It is wise not to use it.