Buddhism in one word is, for me, 'happiness'. But that's quite a mouthful! Before we experience happiness, we need to experience 'freedom' — another difficult concept, and it means, being free from our habitual tendencies that constrain ourselves. How do we do that? With 'mindfulness'. Sounds easy, right?

It isn't!
And this ties to the excellent single word suggested by JS, 'overrated'. I think that she was quite keen in saying:
Quote from: JS
[Buddhism]... when it comes down to it, it's pretty obvious stuff
Yes, yes, a thousand times YES! The beauty and appeal of the teachings of the Buddha is that IT'S ALL OBVIOUS! The problem is that we just don't really
experience it as obvious, and that's why we need our training!
Let me take a typical example, which beginners (even this 7-year-beginner typing here) take for granted as obvious, but then act as if it isn't. Classical Buddhist meditation focuses often on one concept, "impermanence". For the scientifically-minded, we could call this "entropy": given time, everything changes and eventually fades away.
Obvious!
So we read that simple teaching, "contemplate impermanence" and say, "D'uh, that's so obvious it's not worth the effort. Of course things change. I
know that. Nothing stays ever the same, either at the macrocosmic level, or down to quantum particles. What a stupid thing to contemplate!" and then we stand up, kick our toe on a table, a vase drops to the ground, gets shattered into a thousand fragments and we go: "Oh SHIIIIIIIT why oh why did I got this vase to break? It was a gift from my grandma! Irreplaceable! Damn damn damn damn! I'm so unlucky! I'm so STUPID! Why does this all happen to me?"
Right. Intellectually, sure, we know that everything is impermanent and changeable. But when we face impermanence staring us in the eyes, what we do? We go nuts. We expect things to last forever. We're terribly disappointed, frustrated, anxious, or even very angry when something breaks apart or changes. In fact, we can say "impermanence impermanence impermanence" the whole day — because it's obvious! — but then get scared looking at the mirror and thinking: "oh no, another wrinkle... and I'm going bald! I need some treatment! Perhaps a face lift and some new shampoo..."
Or, to go to extremes, our favourite pet dies — and we're heartbroken and frustrated that this just happened to us at the worst possible moment in our lives, and that it seems so unfair, after so much love and care we have given to our pet, and the money we spent in treatments... why, oh why, did our pet die just now?
But of course every living being must die some day. We
know that. We just hope that it never happens. And when it does, we're incredibly sad.
So on one hand, we say that the Buddhist teachings are obvious and overrated, but then we act as if we believed the exact opposite!
So, indeed, JS, Buddhist teachings are pretty much "stating the obvious". In classical Buddhist terms, it means "looking at things as they are, not as they appear to be." The issue is that we
believe the exact opposite. We know that entropy is widespread in the universe, because we have studied that at school (or read on Wikipedia), but we still get sad and frustrated when things break apart or change. We know that our actions have consequences, but we still hope to avoid those consequences. We know that we cannot buy happiness, but we still spend money in it. We know we have all the tools to find that ever-lasting happiness inside of us, but we pretend that we need "something else from someone" to get those tidbits of happiness. We say we have free will, but we behave as if we're constrained by our feelings, our friends, our enemies, our society, and so forth. We are somehow aware that things are not as they appear to be, but still pretend that they are.
So we accept the "obviousness" of the Buddhist teachings, but then we behave as if the reverse is true and become incredibly disappointed.
Well, the good news is that there are methods and techniques to take to heart all those "obvious" things and stop being frustrated because things are not as they appear to be. That's all there is. But getting there is anything but obvious!