A backward look

Here's a tip that works for writing both fiction and non-fiction: Sometimes backwards is best.
A dilemma for many writers is when they have an idea for something and they know where they want to go with it but they just can't seem to get there. It's like seeing the finish line but having trouble getting into the race.
Many writers have solved this problem by writing the ending first. By doing this, you've established the finish line - yu have a destination. And you've got the creative juices flowing. Now all you need to do is follow the road, through your sentences and paragraphs, that will get you there.
Does this sound far-fetched? Think about the last time you planned a vacation to a far-away place, some place you had never visited before. That was your destination. Your next step, probably, was to get out a roadmap to start planning the trip, including all the interesting stops along the way. And then you start the car.
That's what writers do. And remember, you are just the driver. The passengers are your readers. Make sure to make it an interesting, fulfilling journey for them.