need help to translate English to Japanese

Hey there, I'm Bray, I am currently working on a new tattoo which involves my interest to have it in Japanese writing going downwards - I need the most accurate translation I can get, the phrase is ''The Struggle Within'' symbolizing the Internal struggle between the two sides of a person, the good and the bad.
If anyone can help me with this translation I would be ever so grateful!
Thanks :D

I think it's maybe "kattou(葛藤)".

Lyrics from "ALIVE" by SOUL'd OUT
http://www.youtube.com/watch?v=BrqUC3neqdw&t=2m16s
非全能 (Hi-Zennou; I'm not omnipotent)
It's knows 葛藤 (kattou),
in the inside of the limited range!
不完全と未完成って形容だけで片付けんのか？
(Do you give up that's just imperfect and incomplete?)
It's wrong! This is a shout of generation!