Great design is finding just the right solution that let's you have your cake and eat it too, but competent design is realising when the business just won't allow such magic, owning up to that realisation, and making hard decisions based on the consequences of that realisation.
This is probably the most difficult thing to do if you are a perfectionist and it takes a toll to continuously keep doing this. Together with this should also go a warning that know what is your compromise limit.