-You are going to be hot.
-You are going to cold.
-Your feet will hurt.
-Your back will hurt more.
-You will be wet.
-You will be muddy.
-You will be dirty.
-You will be thirsty.
-You will be frustrated.
-You will be angry.
-You may even cry.
-You will work by tractor headlights at night.
-You will wake before sunrise to work.
-You will work with a sandwich in your hand.
-You will be challenged by nature.
-You will be challenged by people.
-You will work harder then you should.
-You will spend more then you ought.
-You will earn less then is fair.

Are you still reading? Wow, you are brave! If you are still reading also know this:
If you love what you are doing it will all be worth it.
You will be none of these things all the time (except maybe the last!) and most of them seldom, but they will happen and then only your love of farming will be enough to keep going.
Then you know you are a farmer.