Night driving is allowing your eyes to adjust, the pupils will dilate.
The glare of any headlamps can be uncomfortable at first. If someone dazzles you, you can flash them once to let them know you are there and give them a chance to dip their lights, look to the left kerb and not directly at the lights.
The light conditions change all the time and it can keep you alert.
Try to figure out the road from the brightness of other cars headlamps. When on full beam it is advantageous to memorise the road layout ahead should you need to quickly change to dipped headlights.
The typical time drivers fall asleep at the wheel is between 2:00pm and 4:00pm, after lunch. I would understand if people thought this was at night.
Another vehicle to watch out for are tractors, they have two headlights close together and as such can seem to be further away than they actually are.
Forward planning is important, as you can take advantage of being at the top of a hill to see and memorise where you can see the headlamps on the country roads below, to work out the bends before you reach them. You can also note any brake lights to know roughly when to brake.