When ever I apply my brakes they seem to pull the the driver side. Last year I replaced them and I thought that might solve the issue... it didnt. So I delt with it and now that I need to replace my brakes again I want to know what might cause this and how I can solve it.

The driver side pads wear down faster then the passenger side.

 

one of the pistons on the caliper (if not both) is probably sticking

 

Replace the Calipers and rotors on both sides.
Don’t use Cheap Parts, like Auto Zone, these are from China and can wrap as soon as you step on the pedal.
Use a Vac Type Bleeder to pull as much fluid through both lines as you need to, to remove the air and look at the fluid and see if there is dirt/rust in the lines.
If dirt in the lines consider replacing them too and new rubber hoses.

$$$$ yes it will cost extra to do it right but "everything in time”… “Do It Right The First Time”.