Build material for your future self to create from. journals-are-full-of-useful-material but so are photos, books and anything you might think of. (everything-is-a-possible-source). The-Spark-File is a useful repository of ideas for example.

You can then use this archive to create from.

References

Be a good assistant to yourself. Prepare and gather, make notations and sketches in your head or phone. When you work, all that mapping, architecture, research & preparation will be your past self giving a gift to the future self that you are now. That is the sacred. –[Jerry Saltz] (https://twitter.com/jerrysaltz/status/1556296370440400896) via Austin-Kleon- Be a good assistant to your future self

• Build the Archive– Robin Rendle