build a utility table

I'm not sure exactly what you mean by a utility table, but here is an example of one LWer doing something a bit like a net utility calculation to decide between two houses.

One piece of advice I've seen in several places is that when you have a big and difficult decision to make you should write down your leading options and the major advantages and disadvantages of each. How much further gain (if any) there is from quantifying them and actually doing calculations, I don't know; my gut says probably usually not much, but my gut is often wrong.