magical items and ingredients just aid a spell, it doesn't mean a spell with 50 ingredients is better than a spell with one or no ingredients. with every spell it comes down to energy, visualization, and intent. study up on 'the basics' before casting spells.
basically, you need to focus all your energy into the task at hand. that's what gives the spell its power, not the ingredients [though they help] once you've cast your spell [depending on the spell] be sure to work to achieve it. a love spell will fail if you don't talk to the person.