Certain professions require lots of training and certification. Doctors. Hostage negotiators. Nuclear physicists. I’d really rather they know what they’re doing.
But for most pursuits there isn’t that level of risk hanging in the balance. In most cases the best way to get started is just to get started. Give it a shot. See what happens.
There’s really no benefit to delaying, since experience really is the best teacher. Taking more time to prepare really just delays success.
What are you delaying getting started on? Why? Can you start today?