How to say "person who is consistent" (in romaji) ? Is it a Japanese principle?

Question

I have seen a documentary about a mangaka who would draw her own manga from start to finish and the documentary described that she was applying a Japanese principle of doing things alone, at your own pace, from start to finish. It was described as a principle of responsibility and integrity and it was contrasted to the way in western productions usually creating something is done by several people with different skills, whereas in Japan when you do everything yourself, your spirit is reflected throughout your work and has therefore more soul and harmony.

The documentary described this principle as a principle of integrity, of responsibility, a person should take responsibility and work through things on their own. The mangaka kept saying she wanted to be a person of integrity because of this principle.

The principle in Japanese sounded like "Suji yo konsu" meaning a person who is consistent, but since I don't speak Japanese at all (I only begin), I can't find which principle it is. Do you know which principle it is and how to write it in romaji? I have looked in Google I can't find any information on the documentary or on this principle. I would really like to learn more about this principle if only I knew how it is called in Japan.

Thanks.

-- An answer from a Japanese speaker who will recognize this principle and give the word or phrase that describes this principle even if it doesn't sound like what I think I have heard is also acceptable. I suspect it is something the Japanese know and live by so maybe there is a common word for it and I might have misheard. My interest is to know more about this principle of responsibility/integrity/own path/consistency to do something alone from start to finish. From the documentary there is a strong emphasis in doing things alone in this principle.

Answer 1

This is a guess, but it might be 初志貫徹{しょしかんてつ}, or "shoshi kantetsu." It is a 四字熟語 compound that refers to having an idea/feeling/will and seeing it through to completion.

http://dictionary.goo.ne.jp/leaf/idiom/%E5%88%9D%E5%BF%97%E8%B2%AB%E5%BE%B9/m0u/

Answer 2

This phrase, 筋を通す, seems to actually show up in dictionaries as a unit on a regular basis.

Unfortunately it doesn't usually show up in the japanese->english section, and when it does the entry is incomplete. So I'll supplement the links given here with a couple examples from the Genius and O-Lex Japanese-English dictionaries:

彼は最後まで筋を通した。
He stuck to his principles to the end.

私は筋を通さないと気が済まない。
I feel guilty if I don't go through proper channels.

As 非回答者 said in the comments, the phrase has a general meaning of "following through" with principles or procedures (personal, official or cultural).