I have a gpg encrypted file with them in just in case, but mostly I know them from memory, or rather I'm able to find them back. I have a few "roots" passwords

I have a gpg encrypted file with them in just in case, but mostly I know them from memory, or rather I'm able to find them back. I have a few "roots" passwords which depends on the necessary level of security and the importance of the service. Them I know by heart. Then for each service I add a few characters (letters, numbers, punctuation signs) which depends on the service and feel natural as prefix and/or suffix (sometimes it's a bit more complex if it can be fun). For instance lets say a root is "icanh4zcheeZbugr", then maybe my reddit password will be "reddicanh4zcheeZbugr,t". It works pretty well in practice. More than one time I was sure to have forgotten a password and was actually able to rediscover it quickly.