Top scorers: what is a common bad habit to AVOID?

[laboddw508]

About 7-8 months out from when I want to take the test.

Got the fundamentals down and now doing untimed practice, and planning to tackle timing very strictly in about a month or two.

What are some bad habits that I should be aware of in order to acknowledge them now and put an end to them, well before the official exam?

Any advice helps.