Delayed Gratification - How to?

As humans we are susceptible to buying those nice shiny things… (cars, clothes, houses) at the most inaccurate of times and well sometimes, spontaneously.

In a generation where a view into the lives of others is just a digital step away, it’s easy to feel like we are “flexed” on by others, or that they are doing better than we are.

My question to you all is this -

What are the methods that you have used (or been witness to) to sustain this delayed gratification other than pure discipline?