1. Clicking on your own ads will get you kicked off Adsense really quickly. How does Google know that you are clicking on your ads? They know through your I.P. address. This is your computer's signature. When you signed into the Google Adsense dashboard to access your account, Google recorded your I.P. address and if you click on your own ads, Google will know.
2. Provide incentives for people to click on your Adsense advertisements. You can offer money, discounts, or just beg and plead to get people to click on your ads. This will also get you kicked off of Adsense because their ads are not getting quality clicks. There is minimal to no chance that the people clicking on those ads are actually interested in what the end website has to offer. They are only clicking because of your incentive and that hurts Google's reputation.
3. Running an Adwords program to promote a website with Adsense content is unethical. You will probably pay a low amount for the clicks that you receive from the sponsored ads on the Google search to receive high quality clicks on the Adsense ads sponsored on your Website. Google loses here, Google doesn't like to lose.