Learn magick not spells. Spellwork is a part of magick but not the foundation of it. When someone jumps into spellwork before learning magick, it's like getting in a car before learning how to drive. It could very well be disastrous. You're lucky they didn't work! Some people end up doing spells that work perfectly, and it causes problems they don't know how to fix. But most likely, you are trying spells like eye color change, shapeshift, fireballs, wings, become a vampire, etc. Am I close? Or perhaps you're attempting the "kinesis" craze that is a waste of time and energy. Even if, even IF you could make a cup of water jiggle, cause a flame to dance, or crumple a paper clip with your mind (which is highly improbable) what good is it? David Copperfield and his stage magic will be far more popular than you, I assure you. If you want to do magic tricks, learn stage magic, it has more consistent results and it's overall more entertaining. If my friend told me to sit and watch as he moved a drop of water with his mind, I would pat him on the head and tell him it would be easier to just use a spoon with his hand.
Real magick is about fine tuning oneself internally first and then being able to manifest one's desires externally--desires not beyond natural laws.