We've talked at great length about passwords throughout this book multiple times, so much in fact that you're probably sick of hearing about them. Here's one last tip:
Make sure you are using the right password.
Not able to access something and you're stumped as to why? Step back and make sure you are using the right password. For that matter, make sure you are using the right username as well. I cannot tell you how many times I have done this over the years, and every time I feel just as ridiculous as the first time. Sometimes all you can do is laugh about it. Seriously, though, the more credentials you have in your collection, the more confusing it gets, and the easier it is to use the wrong ones. Again, this is where a password manager can really save your sanity and up your bus factor as well. By utilizing a password manager, you can use shortcut keys to copy/paste passwords without even having to really know them.