Write clues to your passphrase, not the actual passphrase. I spend a fair amount of time making my username and password. I choose something that I'm going to remember.

As an example, I was asked to attend a meeting to check out a point maker, a box that bombards objects with photons to collect the reflections, generating a 3d point cloud model that can be measured in cad. This particular one was fairly awful. Bottom of the barrel effort. The salesman was a complete slob, he was late, he took forever to set it up and had much difficulty getting it to actually work. When it did, it measured a 12.75" brick at 14.5". I knew right away it was shit.

They forced us to create an new account on the laptop with the software as it was too advanced and proprietary (pukes) for me to run it on my cad workstation. So, my password begrudgingly became a stylized derivation of "This Guys Balls Smell Like Cheese". I still remember that password to this day 12 years later.

Not only that, but when we would have the guy out to troubleshoot, I would sometimes have to log in for him to repeat our steps. The salesman was always impressed with my typing speed and ability to remember my password. He probably never even knew my password was a total insult at him. My clue for the pass phrase was "Lynard Skynard".