Laptop life will increase, if you care about these generally avoided things.
Do not try to wash your computer by any kind of liquid.
Do not keep heavy things on your laptop.
Do not keep your laptop on dust.
Do not keep anything on laptop surface.
Do not slam the computer display when you close it.
Never place the computer surfaces.
Do not expose your laptop to temperatures below 5º C (35º F) or above 50º C