Many of us at least partially let go of our initial plans of leading unblemished lives by adopting a somewhat more realistic and adventurous learning-by-doing approach. On the other hand, by sharing the experience with others, we may save one another a great deal of time and effort, especially when it comes to some tricky things to look out for, and these people are sharing exactly this kind of wisdom, answering one Redditor’s question: “People who are 25 Y.O. and above, what’s the harshest life lesson you’ve learned”?