You're not meant to know it all. Every person that has ever done anything great, was once an unknown who had no idea what he/she was doing. In order to get where you need to go, sometimes you just have to wing it.
Going with the flow and allowing life to take you for a ride, can often yield unexpected results. You never know what's going to happen anyway, so letting the chips fall where they may, could ignite a spark!
Living is not about controlling every outcome, it's about the road you take to get there. It's about chance encounters, unforeseen discoveries and happenstances.
A life unpredicted is not irresponsible...it's just life. Life is a never-ending stream of surprises. So when you just don't know what to do next...just wing it and see what happens!