I always use patterns for non-core services. It works well except when there are annoying rules for passwords that don't match my pattern. However those are e

I always use patterns for non-core services. It works well except when there are annoying rules for passwords that don't match my pattern. However those are edge cases that force me to either remember my password or I don't use their service. For my core passwords, such as workstations, email and servers, I still use a pattern but I tend to just remember those and therefore don't have problems when I need to change. For my work password I start it with number of months since I joined the company, and this follows along with the requirement to change my password each month.