Great question and could be tough in the sense of every decision is premised with a question. I like answering "What, where, when, who, why, how, and how much" first. Sometimes not all of those are necessary. Once I know those I could drill down further for each category. Sometimes the 'real' reasons are revealed and a different course of 'action(s)' are seen.
Another method I learned is "Reveal - Notice - Respond - Witness". Reveal the question offering a purpose. Notice its impact. Respond with solution sets. And, make it real by writing it down. That was a simplified version shared. That is a method shared with a program called 'Natural Brilliance' aimed at getting out of 'Stuck States' offered by Learning Strategies.com.
With the 'known' or 'givens' for the problem or challenge revealed the 'W's and H's' to keep or maintain reinforcing the goal or objectives becomes more obvious. Also the things, elements, components, of which to avoid or eliminate, become more easily seen.
Best wishes on your adventure :)