My mom has this problem, I think, in a milder variant. She would've been diagnosed as a kid if they'd had a definition for it back then; and as an adult, she's always felt like she had to have somebody to help her through life--first her parents, then her various churches or her various husbands (she never left them; they tended to leave her). Nowadays, she listens to various alternative-medicine gurus to tell her what to eat and what to do or not to do. In a way, I think she has problems analyzing her own decisions; and it doesn't help that my grandmother is a rather strong-willed sort who, though she isn't mean about it, generally expects to have her own way at all times.
Decisions can definitely be difficult. I can make them, but it's not intuitive for me. When I make a decision, I have to step back from the situation, weigh the pros and cons, and add up the net benefits for each option. So I make decisions myself, but I make them slowly and analytically instead of jumping on what seems to be the best option. I can sometimes make a decision without meaning to, because it fits into the conversation and I'm focused on saying the right thing for the situation.
You do have some experience making decisions, though; so you could probably branch out from there. If you can analyze the decision--doesn't matter if it takes you hours--and communicate your desires clearly, then you'll have it down... most likely it will take practice.