As simple as it may sound but one of the hardest thing to do especially when you climbed up the ladder.
Fearless. Simply mean be bold and owner your ideas. Don't be afraid of peoples' expectation towards you. We are human after all, we make mistake. Leaders cannot run away from making decision. Everyday there is a decision to make. Be it as simple as what velocity model do I use for my map, to more complicated PSC extension option that will bring the highest value to the corporation. Evaluate all the options - fast, then make decision. Once you make it, own it, and be accountable to it even if the result turns out to be bad.