Face it. You are going to age. You could have an accident and injure your brain. You might develop a brain condition due to disease or environmental toxicity.
Learn the mind mapping skills that can help preserve your memory and thinking processes. Learn it as early in your life as possible. Develop mind maps about your life experiences. Save the copies and computer app setups should you have cognitive decline and wish to reference them.
A visual journal-diary is a great thing to have.
Click the mind map to expand it.