This sounds very much like a
inspired by the Law of Attraction. The crucial difference between chaos sigil magic and LAW is that in sigil magic, you 'encrypt' your conscious desire by drawing a sigil, charging it, and then banishing it from your mind (i.e. consciously forgetting it and not dwelling on it) while LAW is about constant repetition and reaffirmation. In your case, I would recommend striking a compromise by composing fiction, e.g. a story or poetry, instead of overtly stating your intent over and over again. It's easier to create a hero protagonist in the third person than to imagine oneself to possess qualities one ordinarily lacks. I would also advise against journalling because of the inherent dangers of doubting and overanalysing. In contrast, your hero will succeed as succeed he must in a good story.
Come to think of it, it could be a good solution for complex situation where a simple chaos-style 'statement of desire' (typically a short sentence) is insufficient and where you want something to happen in a very specific way. Your story, poem, etc. would then encapsulate a more sophisticated approach to the matter at hand than a 'classic' graphic chaos sigil could.