When choosing a field of work, it's important to look at the pay. I want to work at something I love, but I also want to get paid well for it, and no matter how much I love a field, I don't like being abused. If a field is money-poor, it just is. Some industries are awash in money, some aren't.

Next thing is how many people are eager to be in the field, no matter the cost. Don't enter a field overcrowded with good people. Sports, acting, anything glamorous. For reasons that escape me, science fits in this category. Find an area where you're genuinely appreciated. If there is no money involved, the appreciation is fake.