Populism is when people get what they vote for, as opposed to "democracy" where parties don't actually implement what they promise. "Democracy" is when the government thinks people are idiots and shouldn't be listened to because the "elite" knows better.

So if you vote based on your happiness and thigs you care about as opposed to voting to optimize the "GDP", then you're a populist voter.

And if you get what you want (instead of increased GDP at all costs) then the government is populist.

And if then you're happy, then you're a fascist.