Working Truth
One of the tricky things about Truth is that it's going to look different from different points of view. As we become more acquainted with some of the deeper principles at work, our personal concepts of Truth are going to need to be adjusted. So, we can't hold on too tightly to whatever our current understandings are. A helpful concept, I think, is the idea of a "Working Truth"--something that works for our understanding now, but something we're not holding onto so tightly that we're unwilling to let it go as we grow.
The concept of Working Truth is like what happens in the study of physics in high school. We might start by learning how Newton looked at the physical world. Our Working Truth of how the world works might be Newtonian physics, with it's simple but important laws. In college, we would hear how Einstein and others realized the shortcomings of the Newtonian view and were forced to expand the simple laws to account for new observations. So, now our Working Truth of physics must expand to include relativity and quantum mechanics. As we study further, more shifts will surely occur. We might have a hunch about an entirely new way of looking at a problem and hold that as a Working Truth, until it is disproved or something better comes along.
To make this an interesting exploration (and because I don't hold the "life is meaningless" point of view), let's assume that the Truth is that meaning lurks behind what usually seems to be a chaotic and unpredictable world. We can then look at some reasons why the Truth so easily eludes most of us. And we can look at some possible explanations for why so many people feel lost and alone.
Another assumption I'd like to start with is that you and I, and everyone else, without exception, are inherently good. Nobody is inherently evil. In fact all evil really is is the absence of the light that illuminates the inherent good that is there. If I turn off the light in this room, it becomes dark, not because darkness enters and takes over, but only because the light is absent. So, with this point of view, darkness (as in an evil force in the universe) is not real, and there never will be a "battle between good and evil." When the light (of Truth) enters, darkness (what we might have called evil) simply disappears.