writing music

making music is so difficult Ive just realized my ideas disappear or its a copycat of someone else work .In music there are 12 diatonic notes which means the 12 notes our ears can recognize, So basically, you can run into a ton of part-writing errors which include, but are not limited to, parallel 5ths, parallel octaves, similar motion and general dissonance. Also, you can have direct octaves and fifths, leaps of larger than an octave, improper use of a pedal tone, incorrect progression, so on and so forth. What this all means is that the music will sound extremely cheesy. With something like parallel fifths, you'll get an unintended Asian sound. So again, what does this mean? is writing music a gift from God??