Verse 2.16: Those who are seers of the truth have concluded that of the nonexistent [the material body] there is no endurance and of the eternal [the soul] there is no change. This they have concluded by studying the nature of both.
Would you consider yourself to do/learn things the hard way or the easy way? Think about it...carefully. On greater inspection, personally, I've realized that my tendency is to do things the hard way. In fact, most of the material world seems to like to do things the hard way.
The clear indication of that is our tendency to just not "get it". For example, we all have experiences of trying to achieve something by doing the same thing over and over again thinking that "this time it will be different." This pretty much sums up our experience in the material world. Constantly hitting our heads against the wall without getting what we want.
That's doing things the hard way. In fact, Einstein said it best, "Insanity is doing the same thing over and over again but expecting different results."
So here, Krsna is telling us, "I"m giving you the answer. Not only I, but the great souls, have concluded that the material body is temporary and the soul is eternal." All we need to do is take this to heart. But oh no, our ego is thinking we know best and that we need to figure it out. What actually gets accomplished in the end with this thinking? Nothing. More frustration and anxiety.
This highlights the importance of taking bona fide guidance, not just in our spiritual lives, but in everyday life as well. Can you imagine trying to learn all the parts of a car, how they function and how they interact with one another on your own? It's not to say that one couldn't do it, it's just that it's the hard way! Instead if we learn from an expert mechanic and study under their guidance, everything is sped up.
So that's what the Bhagavad-gita and bhakti yoga is all about. It's the easy way to help us reconnect with God. So it's up to you, what are you going to chose in your material and/or spiritual life? The easy way or the hard way?