Gevurah in Tiferet - strength and discipline in beauty.
This seems like an easily supported cultural pairing. The world today easily acknowledges the power, discipline, and strength, that support the core of publicly accepted people and objects of beauty.
In forging a life that aims at harmonious balance though, I often imagine myself using gentler qualities than strength. I think of my psyche as something that I am often too hard on, and therefore need to handle more carefully.
Accomplishing a beautiful and balanced result may take strength and discipline judiciously applied over a long time. Let us remember that the finest works are often crafted over decades, and not in mere minutes.