Prepare
In the end, Sisu is more about the mindset and less about the word. You can use your own Kosmik Keys, but the idea is about doing the important things regardless of how much doubt you face, or criticism you risk.
It is time to revisit your Kosmik Keys and use them to do the things you do not like. Seems familiar? This mission is an extension of the last mission. Use this opportunity to practice Negative Visualization and Deep Work together so you can strengthen your discipline muscle. In fact, here is our suggestion:
Perform Negative Visualization at the start of your day
Visualize yourself repeating “Sisu” (or a preferred Kosmik Key), especially for the duties you hate
When the actual moment arrives, and you see yourself slacking, repeat “Sisu” (or your Kosmik Key) as you visualized, and get into Deep Work