There’s some truth in this statement, but it’s not lying to yourself to just be as good as you can get and be “reasonable” about it.
Life is too short to spend every waking moment trying to get better at something you might only be so capable at doing?
I agree that you should optimize your swing as well as you can, and that’s always “work in progress”. It never really stops. The question is how much effort should you put into it?
This last week, I played the best golf in my life, and enjoyed it. Didn’t score my lowest, but it felt really good. Plus, I’ve only had 3 clinics and 2 lessons this last month to improve from crappy Golf (for me) from a long break to what I consider good enough golf. Planning on more lessons, but only as needed. Clinics will be on a twice a week basis.
Am I lying to myself to think I won’t get much better? I don’t think so. OTOH, if I thought I could get to scratch with a lot of work, I feel like I would be lying to myself.
I'm a lefty with lefty eye dominance, and find that that doesn't really inhibit my putting in any way. If I was right eye dominant, I suppose it could possible affect my putting? I don't really see why since I use a centered putter anyway?
Off topic about archery: