There are a lot of times where I'll hear a song — often far outside of the "guy with a guitar" genre — and just know that I have a "way in": that I can do a cover version in "my style" (whatever that is). But even more often, even a fairly straightforward song seems out of reach.
"There is no try; only do." — Yoda
What I've found is that so much is possible if we just forget what is "impossible" and do it.