being creative means actually making things

You can have all the creative ideas you want but if you don't follow through on them, you aren't creative.

"Many people have great dreams, only a few wake up and realize them."

From Why Intelligent People Fail:

Lack of motivation. A talent is irrelevant if a person is not motivated to use it. Motivation may be external (for example, social approval) or internal (satisfaction from a job well-done, for instance). External sources tend to be transient, while internal sources tend to produce more consistent performance.

...

There are 19 more reasons at the site.