If you haven’t read Yes! 50 Scientifically Proven Ways to be Persuasive, by Noah J. Goldstein, PhD et. al. run and get a copy (or request it from your local library).
This nifty little book provides useful insights from research that the authors and others have done to understand how people respond to attempts to persuade them. In some of the findings you’ll find validation for practices you already have in place. In others, you might be surprised to find that something you might think is persuasive may actually have the opposite effect.