If you don’t share your ideas, you’ll never find partners & investors.
You won’t be able to refine & improve your good ideas.
You won’t be able to discard your bad ideas.
Just don’t talk too much.
At a certain point, talking starts taking the energy out of ideas.
The idea loses steam, and fizzles.
And then you just start sounding like that irritating person who always has ideas but never does anything about them.