Just as it "takes a village to raise a child", it takes much more than a solo founder to keep a nonprofit alive. If the only people excited about this idea are the founder and family members, then perhaps this is a good idea for a for-profit rather than a nonprofit. Having lots of people willing to help launch a nonprofit (board members, volunteers, donors & staff) can signal broad community support. So look around to see who is ready to support creating a new nonprofit.