Blog about a pattern or project which you aspire to. Whether it happens to be because the skills needed are ones which you have not yet acquired, or just because it seems like a huge undertaking of time and dedication, most people feel they still have something to aspire to in their craft. If you don’t feel like you have any left of the mountain of learning yet to climb, say so!
This is a hard one -- because it's just not the way I think. Not having a skill needed isn't a reason not to do something -- it's a perfect excuse to try something new (we aren't talking life or death here). My whole life is a learning experience....and there's something to learn everyday. Different cast-ons, short-row techniques, backwards knitting -- gotta try them all. My Ravelry queue has 162 items -- most of which aren't items I'm planning to make, but rather inspiration. One of the criteria for choosing the next pattern to make is that it includes a new technique to learn (the more the better). And for me -- there's no such thing as taking too much time. If I really want it, how long doesn't matter.
Having said that -- my aspirational project is to design my own. A sweater -- not just a basic stockinette stitch top-down raglan. But something that fits and flatters me -- though I don't know what that is yet. And a shawl -- in a shape that stays on my shoulders, isn't too big or small, and wearable with jeans (without looking ridiculous). The more things I make, the more I know what specific features and techniques I can use in other projects.