Your kindness needs to be assertive and shouldn't be given indiscriminately, lest you attract wolves in sheep's clothing.
There are many women who are willing to sacrifice themselves for others, only to be ultimately unappreciated. Genuine affection is often trampled upon, and deep feelings are consistently disregarded.

In the world of love, not all of your efforts will be rewarded. After all, there's no rule stating that the more you give, the happier you'll be. Conversely, the deeper you love, the more devastating the consequences can be.
Naive women find happiness in love, while intelligent women invest their time and energy in themselves. In reality, selfish people often lead happier lives. Those who are overly invested in relationships often struggle, constantly seeking to please others and making excuses even when hurt. It's easy to become so concerned with others' feelings that you forget your own.
You dedicate yourself to those who care about you, but they don't value you in return, treating you like a fool. They think of you when they have problems, but discard you when they don't. You must understand that society is evolving. While deep feelings were once real, the scars of corrupted relationships are equally genuine. Smart people leave quickly, while you remain stuck, hoping for a return to the past.
When faced with a completely shattered relationship, the best course of action is to leave it in the past. Don't believe empty promises. It could lead to a genuine heart, or it could be a complete loss.

People are easily deceived, and horses are easily ridden. You will eventually understand that you shouldn't be too soft when dealing with people. Your kindness needs to have a sharp edge, and shouldn't be given indiscriminately, lest you attract wolves in sheep's clothing.