Hello Heaven1991! A suggestion- why don't you try to calm yourself before casting a spell? :)
I mean try to meditate,ground yourself and visualize about a energy protecting you from negative energies. And then visualize another energy to giving you power(color that makes you feel powerful). And then after feeling good,ready and focused cast your spell but take your tim before casting the spell, emotional attachment is necessary and works wonder. After casting, wait for it,don't obsess over the result! Know deep in your heart,it will work. It'll take time but it'll work. And start by casting a simple candle spell. Use white candle and meditate on the flame while thinking about the intention.
Plus for the problem you shared: go take a bath with salt in water. Pray to God or Goddess or angels or spirits to remove the negativity. And go to sleep. Before sleeping meditate on your question or problem and ask the God/Goddess/Angels/Spirits to help you and answer you in your dreams. Think about it and fall asleep. Try to remember the dream and I hope it's gonna work for you. These things do work for me. Blessed be. :)