Everyone who joins this program Adsense they have to strictly follow this rules :
1) Write original and keyword based daily posts and content to get good traffic.
2) don’t tell users to visits your advertising on your website.
3) traffic has to be in genuine way.
4) CTR has to be below 10 %
5) Website must has there own domain ownership and has to put the page terms and conditions of Google adsense to get approved by Google.
6) Must have 6 months old website with good and original traffic.
7) don’t click your own ads.
This all points will help you to play safe with adsense.
Note:
Firstly, you don’t have to use high paying keywords. This is not a rule. If you don’t use high paying keywords in your site you won’t be banned from the Adsense scheme. It might help you earn better (but this all depends on your skill and experience).
Seondly, your website doesn’t have to be older than 6 months. This rule depends on where you’re making your application. If you happen to be in the E.U or North America you can get onto the scheme using websites much younger than 6 months. Those applying from India and China have to abide to the 6 month rule.
Good list of rules though. More newbies should have a good understanding of Google Adsense rules.