Hei Crystal, don't quit! I know English is hard, people in the western world find almost impossible studying chinese, japanese but they never wonder that's also the other way round since the structure, writing, pronunciation, history are so different.
You are still so young, you can make it! :)
If you need any further help you contact me and we can organize tailor made lessons. I'm quite theatrical :) and that helps a lot with student of eastern origin like you .
Good luck anyway and don't give up!