Work hard
Starting something from scratch is impossible. It is so tempting to choose something easier or to become a gathering point for disgruntled Christians. It is so hard and lonely and small and disappointing to have your dreams crash up against the miserable ordinariness of reality.
So on the one hand, you need to kep the vision alive. On the other hand, you just need to be prepared to work hard.
All ministry is hard work, but pioneer church planting especially so. Of course you need to beware of overwork and assuming that you are the all-powerful god who can give birth to a church. The point still stands: this kind of ministry requires perseverance.
You need to work hard at making contacts, work hard at praying, work hard at meeting one to one with your team, work hard at meeting up with new contacts, work hard at raising support, work hard at evaluating your strategy.
Linked to hard work is patience. The church may be born, but it may take two years longer than you hoped in your strategic planning document. Sometimes it can be like playing chicken with the devil: who's gonna swerve first?