Learn how to direct your audience's attention to associated concepts that will make it more likely to for them to say yes to your future request. This easy concept and ways to deploy it to gain influence over people are explained here.
Visualize your past successes before you make a presentation or do an interview. Persuade yourself to a killer performance.
You would never think to get someone to change by actually joining in their behavior. But this is one of the best ways to get change that you've never been taught. The best persuaders use it and you should too.