As an individual you can't change the outcome. What you CAN do is doing everything to not be part of the madness that has the potential to literally cause humanity to fail.
-Pay as least as possible taxes (and zero in warmongering countries)
-Don't use government currencies if possible
-Don't vote for politicians
-Don't watch mainstream media
-Try to convince others to do the same
Believe me: Being able to say 'these clowns are not my politicians, I didn't pay them and I didn't vote for them' feels so f*cking good that I wouldn't even be bothered if they blow up the entire world because I know I am not part of the madness that failed humanity.
If you do the right thing, the outcome doesn't matter.