You can update your campaign goal at any point before or during the campaign.

How to get there:

Login to your GivingForKindness account.

Click on your current campaign's name or the edit link to the right of it.

What to do:

Click on the "Setup/Tools" tab. 

Click on "General Campaign Settings" on the left hand side.

Scroll to the heading "Overall Campaign Goal" and enter the updated amount.

Click "Save Setting Changes"