Take action REGARDLESS!
Because once you take that action, you'll know if you want to keep doing it or try something else. Actions are empowering because they open up more choices.
By taking action, you become more aware of opportunities that you wouldn't see if you didn't take action. It's like opening up a treasure box. When you open it, you find something of value that you weren't aware of before.
If you feel you need to see all the details before you take action, then that's like saying you need to see all the highway roads that take you from New York to Los Angeles.
When we drive in the dark, we only see 200 meters ahead of us. That's all we need to get to any destination because we do it everyday.
And if you believe you can just sit around and 'manifest' things spontaneously, you are likely relying on that as an excuse to not get stuff done. It is a form of escapism. I know this because I used to do that. Yes miracles do happen, but it's almost always in a way you can never anticipate, hence the importance of taking action. Quite often, taking action is necessary for those miracles to happen in the first place.