Maybe a letter from an attorney would add some motivation.

Hello, I am a certified fitness instructor from New Zealand and am motivated to start the real estate phase of my life's journey.

In this case, the sellers where more motivated by making things simple and fast than any other factor.

If it was less, I'd throw it into an IRA. 10% should be easily achievable if not dwarfed by higher numbers in most markets.

Work with a list broker to come up with a good motivated list.

Structuring it this way minimizes the risk for both partners and motivates me to get it done as quickly and inexpensively as possible.

This is a way to award/motivate the sponsor for solid performance. 

to open up the conversation, take all opportunity to build some rapport, and what you REALLY NEED TO KNOW here is there any motivation, distress, or need to sell this house (or any other- don't forget to ask!!)

I would be happy to talk over your plan and see if I can help you achieve it.

Was your motivation to do seller financing to limit your out of pocketcost (ie down payment)?