When I was in the third grade I started to learn English,English teacher would dictate 26 letter in every lesson,it was really really hard to me until I was 6th grade student.well, everyone learn a second language is hard no matter which country laugauge.but if u can find the fun of it and u are really interested in that laugauge,u will enjoy it and won't say"difficult".and wish you'll make progress in your Chinese studies