I understand the need to spend quality time thinking about a design problem and exploring solutions alone. At the same time, it doesn't work for that to be the only attention a design gets.
New ideas can be fragile. That's why there are rules about minding your manners while brainstorming. That said, good design should stand up to scrutiny, instead of having to be protected from it. Our design teams need to invite feedback and know how to handle it with respect.
Are you a lone wolf? Maybe you're a genius. Or maybe, you need to develop your skills at collaborating with others. Most product designs - if not all - will benefit.
Lone Wolf image source: JodiPicoult.com