Time to think for yourself or take your mother's advice?

Growing up my mom always told me don’t do this or do that and of course when i didn’t listen i was ALWAYS wrong. Now that I’m older and going to be a mom I’m wondering, do i start doing things the way i think or feel they should be or do i still listen to what she says considering growing up she was always right…For example: Her theories of parenting Vs. Mine

What do you think? When, if at all, did you take that stand to start thinking for yourself Vs. following what everyone else says is right?