I'm sure I'm not the only one who's been sucked in by a cool-sounding idea. They tend to float past at just the moment you think you need them. When a brilliant move will extend your already great reputation. Or when their successful implementation will save you from a problem you're struggling with.
Caveat Emptor -- While the idea might not necessarily be bad, your ability to rationally and dispassionately evaluate it probably is.
Yes, I've made this mistake. More than once.
The problem is the "want" and "need" aspect. When we want or need a success, we are pre-disposed to ignore contrary arguments, brush aside risks, listen to advocates, and vilify critics.
Watch particularly for the last category. You'll find yourself saying things like: "She's not a team player." or "He's always so negative." Remember -- it takes guts to oppose. Agreeing is the easier path. When someone criticizes a direction or path, there's usually a good reason for it.
One of my former associates used to say: "I love it when the facts and my pre-conceived notions come together". Just make sure when they do, it isn't wishful thinking, and the seduction of a sexy idea driving the convergence.
If you find my blogs interesting, you might enjoy my novels. Check out Leverage and Incentivize.