You're having to make decisions...FAST.
Faster than you'd like.
In the past you've made the tough calls, and been very confident about it.
You had time to consider and weight the options. You consulted your executive team. You had considerable knowledge about what you were up against. You had time to get used to the idea of the consequences of your decision. And you delivered your decisions confidently - even the bad news.
The problem with that is no one wants to feel like a fake. No one was to be or feel phony.
"Faking it" implies you're trying to be someone you're not. For you to reach your goals you can't pretend to be that successful person...you must become that person.
Become that person by making an inward decision to be him or her. The outward signs will show up later, as a result of making this decision.
"Overnight successes" are rarely that.