You can do personal responsibility alone all you want. Nobody will join you. Government regulation affects everyone.
Selling people on personal responsibility is what the oil companies want, because they know it doesn’t work. It gives you the chance to be high and mighty, while nobody else reduces their consumption, so their profits stay the same.
Definitely consume less if you can, but don’t delude yourself into thinking that individual actions in reducing personal consumption achieve anything. Go out there and vote for politicians who propose better climate policies, maybe assassinate some oil, gas and coal company execs, etc.