Creating a Passphrase
Try not using words that are commonly found together. A new trend in password cracking is pulling words that frequently accompany each other, in phrases from Wikipedia and other sites (in various languages), and compiling word lists from these for cracking long passphrases.
Another technique is to use a sentence, pulling the first letter from each word in a long phrase or sentence; for example, “Organizing and Leading Trainings is Hard Work, but Worth It!” becomes the pretty difficult to guess “OaLTiHW,bWI!”).
Also, typos can be your friend! In a passphrase, if a password dictionary, which is used to guess passwords, is using correct spellings, a typo in a word can help reduce the chances of it being guessed.
Again, don’t use the most common passwords, and don’t reuse passwords, especially for your most important accounts – these are the first thing that an adversary will try to use or guess.