The problem with economics is that people and politicians either don't listen or want specific outcomes that aren't good for the economy as a whole.
Voters will always vote for handouts, not for a robust and sustainable economy for everyone. Rich people will always vote for things that increase inequality, because they're the beneficiaries. Homeowners will always vote to simply increase the value of their assets, after they bought them of course. And so on...
The only place anyone listens to economists is in banks and hedge funds. But then you're probably not creating the change that led you to consider economics in the first place...