Design is all about solving problems. Sometimes you think you solved a problem really elegantly, and are pretty pleased with yourself. You debate the pros and cons with the team, and it seems like you’ve won. Here’s what you need to do: throw the solution out and start again. Go through all the cons again. Go through all the pros. Then sketch 20 more solutions. Cross 10 of those out and sketch 20 more. Take the best idea and work on it. Work on it some more. Then discuss it. The work on it. Then discuss it again.
Go back to that original great idea and then compare it with the latest one – you shouldn’t be surprised that the first idea looks pretty crappy, now. And how glad you feel that you put in a little more effort.