1. Sign in to your AdWords account.
2. Click Campaigns at the top (next to Home), then click the Campaigns tab. In the status icon column, you'll see an icon indicating the status of each of your campaigns. 
3. To change a campaign's status, click the dropdown next to the status icon, and then click:
   1. Enabled to resume the campaign.
   2. Paused to place the campaign on hold.
   3. Removed to permanently stop the campaign.