I had the same exact problem a few weeks ago and the culprit was the battery. If it starts up fine without any problems when you jump it, but just clicks next time you go to start it without jumping it, it's your battery. Most cases, a car will make that clicking sound when either the battery is dead or almost dead or the starter is dead. If there is nothing else wrong with the car, I would say get a new battery and you should be fine.