Question:

Does the process involve a number of discrete or discreet steps?

Answer:

discrete

How to remember it:

Try this one: "discrete" means "separate" – so picture the letter "e," divided from its twin in both discrete and separate.

Discreet has an entirely different meaning: it's often used to describe something not likely to be seen or noticed (e.g., "He made discreet inquiries about the job").