How do you make decisions?

I've struggled for a long time on how best to make decisions, especially big ones.  I realize that for a large part of my life, i would wait until circumstances forced me to go in one direction, so i wouldn't feel so responsible if the road i "had" to take turned out to be bad in any way.  But I am getting better at taking charge and actually making a decision, which i think takes a lot of guts for some.  I think the reason i was so afraid to make a solid decision was for fear of the outcome; I was so afraid of ultimate, absolute failure, that it crippled me.  But I've realized that there does not exist such a thing; nothing is a "failure" if you pick yourself up and learn from your mistakes or your actions.  Most often we learn the most accutely after a disastrous or painful event. 

And yet I still find that I hover in state of worry and purgatory while attempting to make a decision in a lot of instances.  People tell me to weigh the pro's and con's, to listen to your heart, to that tiny voice in your head, to your conscience... but i find that my head gets more cloudy the longer i wait on making a decision.  Maybe this 6th sense or intuition actually works better (for me anyways) in the moment, and that it's actually my head and past fears that cloud up my judgement and stiffle my intuitive thinking.  I want to weigh both the pro's & con's of a situation and be very attentive to how i feel when considering my list of options, and i want to do it relatively FAST.