I am 3rd year right now, and the thought of starting clinics and then graduating is pretty terrifying to me! I have talked to a couple of people about it and they said that your first year out in practice will be the most difficult, but you just have to learn to make and rely on your own decisions. My own vet said it took him several years before he felt comfortable as a veterinarian.
I know the job market is tough, but hopefully there are still practices out there that will offer some sort of mentorship to new grads?