I have received following mail from google and my adsense account is now suspended.
Need to reactivate it as early as possible.
We recently detected invalid activity in your AdSense account. As a result, we’ve temporarily suspended your account for 30 days. During this time, no ads will be served on your sites.
Why was my account suspended?
We found that you were clicking on your own AdSense ads, which is prohibited by the AdSense Program Policies.
We understand that you may want to know more about the invalid activity we’ve detected. Because this information could be used to circumvent our proprietary detection system, we’re unable to provide our publishers with information about specific account activity, including any web pages or users that may have been involved.
This is a one-time, non-appealable suspension. After 30 days, we’ll automatically re-enable ad-serving on your account.
If you need more time to identify and stop the invalid activity, please remove your AdSense ad code from your sites to prevent ads from being displayed.
Please note that if any additional issues are found in your AdSense account in the interim period of suspension, your account may be permanently disabled even before the suspension period ends. Please review our list of top reasons for account closure to help you understand the possible reasons that publishers may have their accounts disabled.
If your account is found to have invalid activity in the future, it will be subject to additional penalties, and may be permanently disabled.
How does the suspension affect my payments?
You will be eligible to begin receiving payments again once your account generates sufficient valid traffic.
As a result of the suspension, we are withholding the unpaid revenue in your account and refunding the balance, along with Google’s share, to affected advertisers. In addition, once ad-serving resumes on your sites, we will suspend any future payments for 30 days—you will earn revenue during this time, and, provided your account remains in good standing, that revenue will be paid in the next payment period.
How can I prevent this from happening again?
To help you identify the potential source of the problem, we recommend reviewing the following resources:
Review the top reasons for account suspension article in our AdSense Help Center.
Don't click live ads on your own sites. Test ad clicks on your sites through the Google Publisher toolbar.
Learn how to segment your traffic. Understanding and monitoring traffic to your sites may help you identify sources of invalid activity.
Review the Ad Traffic Quality Resource Center for additional information on invalid activity.
We encourage you to be proactive in ensuring that your ad traffic complies with our guidelines and policies. Thank you in advance for your understanding and cooperation. We look forward to your return to the AdSense network in good standing after the suspension ends.
The Google AdSense Team