I'm trying to think of the word, if one even exists, for the type of person who always believes they're just on the cusp of getting their life goals in order/accomplished/whatever.
Every week of their life (in this particular instance), they say "Well, I know I made a lot of mistakes up until this week, but this week I've really buckled down and I'm on the road to success!", and never acknowledge that they said the same thing last week...and the week before, etc.
I'm assuming it's a noun, but I'll accept an adjective. (Exclamations and adverbs seem unlikely)
So you'd use this in the following exchange;
X: I'm sorry that I failed to pick you up after school last week, I was distracted by intern...
Y: You're always distracted, and always saying that.
X: Yeah, but I was trying to tell you, I'm not like that anymore; on Monday I had an awakening and I realised I need to get my life in order and be more reliable.
Y: Yeah, but you've said that every week for almost a year now, having a new "awakening" that you think will really change you - even though you're still literally stuck in the same rut you were in a year ago, you are the textbook example of a [THIS-THING]
There's an XKCD I'll have to dig up that touches on the idea...
Edit: If you enjoy this word-problem, you'll also get Wikied-away reading https://en.wikipedia.org/wiki/Dunning–Kruger_effect which is not unrelated.