How can i prevent my Google Adsense to be banned by Google

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Dear here i want to ask to you that how can i prevent my Google Ad sense a/c from disabling or being banned from Google? Google Ad sense is very heart favorite now a days for earning money for publisher but there are also a kind of bad publisher who do fraud with Google in clicking via click exchange etc. and they are banned by Google. But there are also good publisher who had a good traffic to their site but being banned by Google due to high rates of click. how can they prevent their account. Please Help??