Blocker is you are worried about looking like an idiot if the decision is wrong
1. Consider discussing the options with other, especially those who may need to help you implement the results of the decision, as that way you can test your ideas and also get buy in from those who matter
2. Should asking other been seen as a sign of strength rather than weakness? Will it actually build respect and trust?
After exercise, ask the participants to review "Blockers to making Decisions and Ways of Managing These" -this is on page 17-18 of their guide.