It's not a secret that wisedom never comes for free - first of all we have to spend almost two thirds of our life gaining precious experience and only then, when our hair starts turning grey, we can finally boast of being truly smart. However, if at least a tiny part of this knowledge was available to us at our younger age, perhaps we would enjoy our life much more and have far less ideas to regret about. So here we are with 20 unique lessons that only the life itself can teach you! Enjoy!