Not suggesting that everyone should do this but it works for me. I have placed 3 colour coded stickers beside my rev counter to indicate 3 points of engine performance.
On my MGZT 260:- MAX TORQUE is at 4000 revs. MAX POWER is at 5000 revs. MAX REVS is at 6000 revs (info found in the car handbook)
The 3 coloured pointers makes it a lot easier to see when quickly working through the gears at the same time as making sure watching the road.