~10% food
~10% utilities
~12% or more judiciously applied in historically stable investment funds and in savings towards future vacations/gadgets
~33% spent in housing
~35% spent (or not spent) in everything else, eating out, buying random stuff, clothing, etc.
Since a small scare, I always maintain an emergency fund easily accessible which covers 7 months of expenses at my current levels (housing, utilities & food)
Besides all of these I still have the luxury of living in a country where there's an unemployment pay that covers an hefty percentage of your last gross salary for at least 2 years since the day you became unemployed.
I can't tell you how less anxious and relaxed I became since the day I completed my emergency fund and started making proper savings and investments.