Let me share with you, the way I went from shooting mid-high 90's to breaking 90's in a very short amount of time. I just tweaked the way how I viewed the GIR.
On Par 4's, goal was to be on green in 3, and 2 putt.
On Par 3's, 2 on - 2 putt.
On par 5's, 3 on - 2 putt... second shot is either a 7 iron or 6, which leads to a wedge for 3rd shot.
If you calculate the above, i'm going for bogey on par 4's and par 3's, and going for par on par 5's. It takes a load of stress off yourself, since you now give yourself 1 more shot to get on the green in regulation. You also start making better club selection for your second shot, which is usually your confident iron.
With that in mind, a little practice on 30-50 yd pitch shots and some putting practice, you should be shooting 14 over-par if you follow the above equation to the letter.
It also made me a smarter golfer, though I'm still working on it. Try this out, and hopefully this little change in your course management should let you score better and have more fun!