You've been practicing putting, chipping and full swing, now ready to take it to the course......
Tee selection, you can't break 90, you don't need to play par 3's over 150y, some maybe less.
With practice you'll quickly get to using 7i as your 150y club. Lets say 7i is your par 3 club, mostly.
Par 4's subtract 7i distance from total yardage then thats how far you want to hit the tee shot, you want as many shots with your par 3 club as possible.
Par 5, hit your long club(or less), par 3 club, and you should have par 3 club or less left to get on the green in reg.
Break the yardages down and see how many times you can use your main par 3 club, the more you use one club the better you will get with it.
I'm sure you heard this before, but it needs to be said.....don't go pin seeking, go for the easiest shot to get on the green, then let your putter do the talking.
Take your time, each shot go thru your routine, take your time, swing smooth, use enough club
One thing that I have changed as of late was clubbing down on the par 4s and hit something that puts me in the fairway. Which in my case was my Heavenwood from my driver. Hitting fairways and putting yourself in a position to hit a green is what boosts confidence and gets you closer to breaking 90.