Well both. There can be times when you need to be still and let God be God. However there can also be times when even without any certainty you gotta take the step and believe God will be there to help you, to lead you further.
I realized lately I just wish God would give me a straight answer, Do this! or Don't do this! Then I would know what to do! Life would be so much easier if it was like that, wouldn't it? But that's not really trust. We are not supposed to be God's puppets. We are human beings with brains, passions and dreams. I believe following your dreams is never a step towards wrong direction. We should take risks sometimes. We should explore the unknown. Because you know what? Even if you take a bold step towards something new, it's not new for God. He is already there. Whatever your next step is, however you decide to decide, God is already there. Nothing is new, strange and unknown to God. He's been everywhere. He knows the whole story.
So quit worrying and step out! Explore the unknown and trust God is going to use it.