future_plan

do you guys plan your future?
what if something happen that makes you cannot continue with your plan?
will you have a backup plan?
i've plenty of plans went on in my mind in these few years
but as time goes on
it showed that the reality doesn't seem to work as it was planned
life is too unpredictable
things happen 
and i realise that i don't even have the ability to plan my own life
or is it even necessary?
for sure everyone has their own rough plan
but once it came to details
i have no idea at all~