Journey without it and you will never prevail, but if you have too much of it you will surely fail.

One could contemplate a multitude of fitting possibilities but the one I am featuring was adjudicated, the most aptly suited. The quality, most fitting in this regard, is confidence!

While there are plenty of those who lack the confidence to stand up for themselves and seize opportunities, there are also plenty of people out there who overestimate their abilities and bite off more than they can chew. To ensure a reasonable level of happiness in life and achieve as much as you can, you have to live somewhere between these two extremes and learn to strike the right balance between the different values that you govern yourself by.