Programmer thinking: cool, ideas, Web
PHB speak: some, implement
If order to have the right mindset for programming, you must replace "some" with "one" and "implement" with "build".
In other words:
1. Is there something that you just have to have?
2. Do you absolutely have to build the first version yourself?
If you can answer both questions "yes", then, by all means, get started. Just start building something. Resources are right at your fingertips. You don't need college, classes, or special training, just a burning desire to learn what you need in order to build what you have to build.
If, on the other hand, either of your answers was "no", then you probably should stay a manager and assemble a team/project to pursue your ideas.
Either way, age has nothing to do with it. All that matters is what you really want. And the only one who can determine that is you.