The notion of taking action without conviction defies the conventional wisdom to think before you act. The truth is, creativity isn't about wild talent as much is it is about getting things done. To find a few ideas that work you need to try a lot that don't. I have found that waiting builds apathy and increases the likelihood that another idea will capture you clients’ energy.
Additionally, I have also found that if you build lots of conviction after much analysis, it might leave you too deeply committed to a single plan of action and unable to change course when necessary. Taking action helps expose whether we are on the right or wrong path more quickly and more definitely than pure contemplation ever could.
Whether you work with a team or alone I implore you to make a commitment to early action—with conviction -- that will help your ideas materialize.