Sounds like your issue is mental not technical. As the saying goes, golf is 90% mental, 10% psychological. Hundreds of books on the mental game, read one if you haven't. Only other advice I can give you is worry about your next shot, not your last one (kind of like life itself,it's a game of what's ahead of you, not what's behind you. ) I have a feeling once you break 90 the flood gates will open and you'll be shooting low 80s regularly, and it won't take you nearly as long to break 80 as it did to break 90. Search out this thread next summer and let me know when that happens!