For me, I take wrong answers and break them down to the actual core issue that I am making, and log those issues so I can train myself not to make that mistake again. Eventually, spotting and avoiding those mistakes becomes muscle memory and will take only an instant. Keep on practicing, you've got it!

my diagnostic was 154 and I've already added a ton to it in just 3 months. Remember that this test is LOGICAL! It plays fair, is simple enough to study for, and predictable. It feels scary, but try to think of it as a game your learning the rules to, not a scary test.