I have not played as long as some of you guys, but I got really excited when the US Open came up, I had just made Master Tier a few days before the Q started, tried my hand at it and shot 82. Next time shot 71, then really got stuck in but only managed to get down to a 63. The cut line and lower scores just galvanised me to try harder, level up and get better equipment (playing Congressional with Rapture driver was not much fun).
When St Georges came up, I shot a 66 first time out, and thought I could really play this course better. Played and played and played, recording every approach shot and most putts for future ref, shot a career best of 59 (when the cut was 58), then made the cut at 58. That lasted about a week, then the cut moved down to 57.
Only thing to do was try out some more - was despairing of ever making it, but today managed my best ever - a 56 (with a stupid double drop on 8th), no lip outs and meter was well behaved and my click finger was on form.
Low scores just made me try harder - read the forum and realised that practice is the way to do it, plus keep copious notes.
I only get to play maybe twice a day - but low scores are certainly possible, some people give up when faced with seemingly insurmountable difficulty - and some persevere. Those that give up, complain.
So - get out there and make some putts, just have fun - it is a game after all.......