The first thing that you will want to do is try to figure out what the cause of your toilet being stopped up is. If you have room in the bowl of your toilet you might try pouring a bucket of water into it to see if the pressure from the water makes the toilet unstop. If you do not have room or the pressure was not enough then you may have to plunge the toilet.
When you are plunging your toilet you should make sure that you use a lot of force so that the suction created might be enough to unclog the toilet. You should plunge the toilet about seven to ten times and then try to flush it. Repeat this process a few times if it is necessary, but make sure that you do not plunge so hard that the water from the bowl splashes on you or the items in the bathroom.