I don't really know Think And Grow Rich well enough to be able to comment on the invisible counsel.

However, yes, the method can be used quite effectively to acquire skills and talents from others, whether real or fictional.

It doesn't mean you are going to download information from them straight into your brain and be able to perform superhuman feats like that scene from The Matrix movie where Trinity learns to fly a helicopter in a few seconds.

But it does put you in an excellent frame of mind to learn those skills quickly, or enhance any existing skills you have.

For example, I rarely play Pool but when I do I first step into Tom Cruise from 'The Color of Money' and then proceed to demolish my girlfriend's game. It drives her nuts because she thinks she's quite a good pool player - and she is :)

And, yes, it does take practice, like anything worthwhile, to get good at this and make it something you can almost do on demand, but you are right that it is a life skill that is invaluable and worth pursuing...like so many metaphysically-related skills.

As you get better with the method, you can apply it in all sorts of ways.

For example, let's say you are called in to see your boss unexpectedly for some important meeting with just a few moments notice. You can place an image of some confident, relaxed, clear-minded person at your boss's door so that as you walk into the office, you step right into the confident "person" while simultaneously walking to your seat in there. You are now instantly in the appropriate mindset to create a good impression.

I'm sure you'll think of many other applications of this idea :)