This describes me perfectly. And the struggle to be better at execution is huge. But with a lot of dedication and habit building I've been able to (partially) overcome it.
So, we should look at ourselves to make sure we are not only daydreamers, that ideas don't only work in our heads, that they might actually make sense in the real world too... But creativity is not the same skill as planning, and that's kinda ok too. It's good to keep your feet on the ground to avoid selling dreams, and I also really hate the people that will only talk big and then show no interest on working on some of their "best" ideas, but creativity is not the same as the ability to fully realize ideas, from creative inception to success. This later part requires many skills. Having reasonable and interesting ideas is only one of them.
Some people are more explorers, others executors. Probably are lots of other words to fit in there with slightly different meanings.
There is some (too much) pressure for everybody to be great at everything and when they are different enough are labeled as having a disease.
This is why people work together, to build on each other’s strengths.