Define every line as the character's inevitable reaction based on their opinions and past. You might add a pause before the product name. You might show the moment your character gets an idea by their happiness as they solve a problem or anger at realizing someone cheated them. For example, being afraid of a fireplace because their home once caught on fire. Break down the motives so that the next line is inevitable.
Every line is a reaction to something.
Lyle Hill says to make the words sound like what they mean. Be better than good. Plan every show to be your best because it can lead to more work. Spot when you're just doing announcing or radio acting. Look in the mirror to check your hair and clothes.