Lose your face, and then you’ll lose whatever’s left to restrain you! Any idea that is present is immune to criticism, no matter how absurd or out-there it may seem. A better way is to think about how this idea was formed, and try to polish it with your logic, sense of aesthetics, and provoke further ideas from this root.
Above all, show your ideas to the world! Besides using a whiteboard, or some blank paper, colorful post-its is a best option. Shower your wall with ideas (quite theatrically, in fact) or sprinkle your floor with them joined by notes on A4 sheets. Never forget! Don’t leave anything out, because the process of thinking is a means to tackle the problem. The answer never comes down to one, single solution, therefore, never discard any thoughts lightly, especially . . . an outrageous idea that will blow others away!
TIP! Every problem can be turned into a project!