No matter how to choose, life is always unknown
At some point, we made a decision, a certain action, that we didn't know about at the time. We make the decision in a hurry, things happen, and there is no time to think too much about them. Over time, one day, it will dawn on you the results of your decision. Life is a chain, and it is hard to take one away from the other. The present happiness is mortgaged for the future, and the future is mortgaged for the past. When you start making the best choices, you also choose regret, pain, and hurt. No matter how hard you try, there is an unknown truth waiting for you, and you must face the results of gain and loss.