My boyfriend is going through school right now to become a vet. He takes some **** tough classes, and not all of them are particularly interesting.
It's a long, tough road to become a vet, but at the end of all, you get paid better and you get to save lives. On the flip side, you have to end lives as well.
Equine massage therapy is a bit of an easier road, not much schooling. The drawback is unless you make a name for yourself, I hear the income isn't terribly steady.
Farrier work again is an easier road than becoming a vet. Now, farriers are extremely particular to each individual person. I am very particular about who does my horse's feet, and I'm sure I'm not the only person.