So, what can we as golfers learn from McGregor. He talks very brashly & people said that was all he was"TALK" but Conor had a belief in himself not from delusions but from hard work. He always spoke about what he was doing & what he could do. Outside agencies were not his concern.
As, golfers you cannot control everything around you. You will get bad breaks, bad weather & sometimes it will not always go your way. But, if you put in the work & I mean work & be honest with yourself. "YOU" is all you can control. That's all you need to control , just you. The greats never worried about others , focus on you & the now. The past is the past , the now is the now & the future hasn't been decided yet.
In golf we spend so much time out on the course that it is impossible to control everything, just you. You decide how to feel & hold yourself. So, the next time you are out playing , don't fret about external conditions out of your control. Stay in the moment, focus on you & your demeanor.
You will have good & bad days but you get out of it what you put in.
Enjoy the process.