Ah, no worries.
I deleted a sentence like "as a higher handicapper (me), you have to choose the right tees to have a chance to play well". My official handicap is 28, I play between 18 and 28 - no time and no lust for tourneys.
I am over in Europe and played a PGA tour prepared course once. I never ever had so much roll. And I never had to hit it three times out of the rough to get closer to the 30 feet away flag. Remember Phils "wrist-gate". Or those carpet like greens.
Course conditions matter, right. Just take my 70+ year old uncle. Distance off the tee sucks - but the course is not that long and has a few shortcuts and overrated holes. But he hits it straight, gets to the greens and boy does he know every hump on that stimp 10 greens. And no, no bunckers for him, no water hazards, no bio hazards - but easy to manage rough. And yes, it has to be dry for him to play his best golf. No roll in the off-season.
Point is, our day-to-day courses might be a little easier to play - stimp 10, less roll, and what not. But you can play a decent round and go low, because you know where you are.
Looking at putting, thats an area where everybody can be excellent. Around the green maybe, too. Iron play is a little harder to get very good at. Distance and accuracy off the tee (yes, both), might be the hardest to get for 10+ handicappers.
Looking at: Again, the old mantra: Hit long, hit fairways, up the GIRs, no 3-puts.
I do not get much over 210 yards off the tee, hence I have a longer iron or hybrid to get to the green, which equals less proximity to the flag. Same as the pros. Hitting the rough off the tee makes that task impossible - GIR go down. The vicious cycle everybody knows. So the mantra for me is: hit fairways, up the GIRs - the rest will follow.
Since your handicap was much better than mine (time before it said bad), I am only wondering if that darn mantra is the same for 10+ handicaps like you?
The key for me to shoot sub 80 scores is to hit my driver a decent distance off the box... I don't have to be in the fairway. But I need to hit it fairly well and keep it in play (no tree balls, hazards or OB tee shots). If I can hit my driver consistently - with distance... Then I give my self a shot at hitting the green.
In particular, when I can hit drive of distance, 250 average, to 280 well hit - sometimes longer; coupled with the course lengths I play (~ 6,500 to 6,800)... I give myself an excellent chance to score. The strongest part of my game is my short irons 8i down to 54* wedge... Especially full swings with these clubs. But I feel comfortable hitting really any iron... So the more I keep the ball in play (not necessarily in the fairway) - and if I give myself a shorter iron in... Then I know I can put the ball on the green - or near the hole. And if I miss the green - I'll still be close to the green as my misses with these clubs are not bad.
When I struggle off the tee (not very often - I'm typically a decent driver of the golf ball), is when I really struggle. As of my last 20+ rounds... The biggest deficit in my game is with my 3W and 3H (I took it out of the bag) off the deck. In particular on Par 5's. There are a lot of times when I'll have less than 250yds into the green for my 2nd shot - but I do stupid things trying to go for it with my 3W - and end up 50yds left or right behind trees or in trouble. Then mix in a few other brain farts (3 putt, duffed chip here or there) and that is why I'm a 4/5 handicap and not scratch. Once I get the confidence with my longer clubs... I think I could easily drop 2 to 3 strokes on average.