If you like brevity:
- Make sure you have either an overall budget set (that value is Daily), or that you’ve counted up all your campaign budgets.
- Separate you campaigns by profitability, at the very least ONE for your most profitable and a second for your NOT QUITE SO PROFITABLE keywords.
- Check your budget regularly. If you are hitting your cap you’re probably doing something wrong.
If you want more explanation, check the longer version of this post here:
Or if you need help with your campaigns, reach out in the comments.