What I would HOPE to find in it would be the insight that I'm doing most things right and that things will get better, some advice on a better job to get, that is more enjoyable than my current job, and can partially pay me directly in bitcoin, although that I would soon be set for life anyway with the bitcoin I already have.
What I would EXPECT to find in it would be "there's no future, the rest of your life will only be suffering, and there's nothing you can do about it, it's best if you end it ASAP". (And no, I'm not doing that, as I haven't received any such letter yet, much less verified it's from future me... (Future me, please include future Bitcoin block hashes and a signature by my keys, regardless of message))