In the beginning it helps to be naive. Because if you focus on how many obstacles are in the way, how little competency or resources you have, and the vastness of the unknown ahead of you, then you'll never start.
My 9-month old son suddenly leans out of my arms toward the ground. He isn't thinking about what it will mean if he drops to the floor. He's only cares that he's decided on a direction and is going to move towards it right now.
Thankfully, I'm there to catch him. Eventually he'll learn the consequence of tumbling to the ground and either avoid or mitigate that behavior. And I'll be glad he does.
But how often are we avoiding or mitigating our actions when there's no such certainty that danger or death lies ahead?
My bet is that most of us would benefit from more time leaning toward things without worrying about the future.