It is the spice of life which sparks action, manifestation, and results. Bolstered by momentum.
What is the spice of life? To me, it's anything from which you can absorb momentum from. Your friend buys a Ferrari: that's awesome - and you too are inspired to generate the income you need to buy one for yourself. That's momentum, and it started with your friend buying the Ferrari; the spark.
Momentum can also be harnessed from negative things. You're fumbling with programming C++ applications. You present a software beta to your business peers and your own friend says, "you've ruined this concept!". Turns out, his thoughtless comment was just the spice you needed. And you apply this momentum as an inspiring wave of motivation to make the program go above and beyond, creating a product better than anyone imagined. Silencing the naysayers.
More easily defined: the spice of life is any inspiring action, thing, thought, or experience. And from these inspiration acts a great wave of momentum materializes. Which is applicable to exactly what you are trying to accomplish. I'll reveal my exact postulation in a few moments, but first let's go deeper.