It turns out that there are two sides to creativity: a more left-brained tendency to focus on something and take it to completion and a more right-brained tendency to have inspirations and insights.
It certainly sounds like you've got the left-brained part of it down, but I don't think that shutting out new ideas like this is a good idea. What's important is being able to recognize which random ideas are worth entertaining and which ones aren't. I know that if I shut out all of my random ideas, I'd have dismissed some of the best ones.
This isn't just an abstract question either. Having really great ideas that are executed well is the difference between a product that merely does its job and a product that people love and tell all their friends about.
It turns out that there are two sides to creativity: a more left-brained tendency to focus on something and take it to completion and a more right-brained tendency to have inspirations and insights.
It certainly sounds like you've got the left-brained part of it down, but I don't think that shutting out new ideas like this is a good idea. What's important is being able to recognize which random ideas are worth entertaining and which ones aren't. I know that if I shut out all of my random ideas, I'd have dismissed some of the best ones.
This isn't just an abstract question either. Having really great ideas that are executed well is the difference between a product that merely does its job and a product that people love and tell all their friends about.