You'll have to go back into your journal either online (app.qeepsake.com) or in the mobile app and find the entry that you want to edit.
The easiest way to search for the entry you want to edit is within the app. You can search by a keyword or date range for your response.
How to search for an entry in the mobile app:
Once you find the entry you want to edit click on it and then click on the edit button.
How to search for entry online:
Click the 'Tap to edit' button to edit the entry. PLEASE NOTE - You can only search by date within the app.