It’s great to be aware of the unconscious mannerism we posses, it’s not to put you down but to help you improve. But being excessively conscious not only makes you uncomfortable but your date as well. If you’re hungry, by all means enjoy the meal. No law and constitution limits you to a salad (who would implement such a thing anyway). You don’t need to fidget on your dress or makeup either, if it’s not something you can confidently flaunt, then give another outfit a go. It’s important to be the best version of yourself.