Before we start building custom profiles and plugging them into the system, let's look at other issues that impact color management. Getting these issues squared away will make your custom profile more accurate.
All the color profiling and monitor calibration on earth won't help you achieve color consistency across devices if you don't get your physical working conditions in order. Here are a few questions you should ask yourself:
Have you been to the eye doctor lately?
Are you taking cold medication? If so, it will really affect your color perception.
Have you cleaned the smudges off your eyeglasses? Your glasses aren't tinted, are they? Did you remember ...