If you create your own sentence, also include the the name of the website or email account the password belongs to, so that the account is linked to the password in your mind.
You can start the sentence with the name of the website or email account, and it won’t reduce the strength of the password.
Here’s an example that I found on Wikipedia:
“Gmail was invitation only in 2004 and was available to the general public in 2007”
Then, using rules for Acrostics, create a password using the first character in each word and number:
Gwioi2awattgpi2
| status | not read | reprioritisations | ||
|---|---|---|---|---|
| last reprioritisation on | suggested re-reading day | |||
| started reading on | finished reading on |