Show, don't tell
Imagine you're going to an important business meeting to discuss a new partnership, and you're dressed with short pants, a t-shirt and flipflops. Showing up to a meeting with the wrong clothes does not guarantee you will fail to achieve your goals; it's certainly possible you will convince the potential partner about your technology and the benefits and that it will all end well. But I think it's clear that you're making it much harder on yourself.