Instead of talking about you, talk about your customers. The situations they're in when you're the right choice to fix the problem.
Here are a few links on the topic from my blog:
Those will give you all the info you need.
The object is twofold: stop being a commodity to your prospect, and enter the conversation already going on in their mind.
An elevator pitch crafted this way also pre-qualifies prospects for you: after all, they must have need of your services if they're experiencing the key problem you fix.