Make more decisions. That's the only way to get better at it.
Successful people fail often, and, worth noting, learn more from that failure than everyone else.
No one has ever built a statue to a critic, it's true. On the other hand, it's only the people with statues that get pooped on by birds flying by.
Mass marketing means appealing to the masses which means appealing to the average.
Every activity worth doing has a learning curve.
Earn trust, earn trust, earn trust. Then you can worry about the rest.