Hi, I thought you may like this Mentalrobics exercise from Braingle.com:
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Defer Judgment

Deferring judgment is an important rule [ For more on 'important rule' go here: http://www.braingle.com/mind/85.html ] for brainstorming sessions, and it's just as important for working with your own ideas. If you judge an idea too quickly, you will reject many ideas that have real potential. Early ideas are easy to reject because they are imperfect, but they can be improved and embellished. Sometimes the best ideas come from combining parts of several imperfect ideas.

If you feel yourself jumping to judge or reject an idea (either your idea or someone else's idea), take a moment and allow yourself to recognize that not all ideas spring forth from the mind in perfect order.
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For more mind exercises: http://www.braingle.com/mind/