You look at a herd of cattle and well, they all look the same... but they know. They all have an individual personality, and those personalities change from day to day. They can have their grumpy days and their happy days and their serene days. But it's unpredictable. You can't be off in outer space when you're dealing with animals.
I had a couple come in with a negative amortization mortgage on a house that costs way too much relative to their income. They're consuming real estate, not investing in it.
I don't want to go bald, I don't know what's coming up next.
You jot down ideas, memories, whatever, concerning your real life that somehow parallels the character you're playing, and you incorporate that in your scene work.
Frankly, my politics are pretty left of left.