Whether you are a temporary or permanent resident, it's important to keep track of your travels outside of Canada, whether by air, land, or sea – even short trips to the United States. This information will be required when you apply for a new Permanent Resident card or Canadian citizenship.
A travel journal is a simple tool to help you log your trips. You can store it with your passport or travel documents. It's not an official document, and there's no need to share it with IRCC. It's just for your own records to help you remember your trips. You won't need to include it with your application.