The book Refuse to Choose by Barbara Sher helped me get through notebooks. I could only ever get a few pages in one before switching interests.

This is the book: https://amzn.to/3OQxX4J

I started with these, and got through them easily: https://amzn.to/3YJwBx7

Now I use notebooks like this: https://amzn.to/47VJeJI