engine light on

My 99 Toyota corolla check engine light has been on for 5 days,I still kept driving it less than 1 mile every day ,the car looks running good same before totally ,the sound of engine is very normal when starting car .Can I ignore the on-warning light to keep driving it in next four months?

My car was checked by Autozone today ,Please read below:
Definition;Cylinder misfire detected-cylinder number 4.
Explanation:
The powertrain control nodule monitors the crankshaft speed and has detected a misfire condition.
Probable causes:
1,Ignition system fault-spark plugs,ignition wires, coil.
2, Vacuum leak
3, injector fault
4,High or low fuel pressure.

No any idea about those,Could anyone give me some directions I may try DIY.
Thanks in advance.