how to play par golf- practice, practice, practice. dont throw for aces, throw your shot to under the basket instead of trying to throw it in from a approach shot. throw with control and with a mindset of getting par on each hole and not with the mindset of getting birdies.
in my mind streaks have nothing to do with our game "unless" we are talking about a winning streak that a player is having with multiple tournaments.
you are totally right about keeping a "right" mindset for each and every shot though.