Being Soft-Hearted in a Tough World

Salam, everyone. Lately, I've been thinking a lot about something. People around me can be so selfish, cunning, and just plain mean. They don't care for others, are rude for no reason, and have ugly characters. The few good ones are rare, and even their small goodness feels huge because it's so scarce. I feel alone in all this, because I'm a really sensitive person, full of emotions and empathy. When I see someone hurting, I feel their pain deeply, sometimes even more than they do. I always put others first and try to be kinder and improve myself. But it's tough. Seeing disrespectful people get what they want while being awful feels so unfair. And I don't want to change-I love that I'm this way, and I know a Muslim can't truly be good without kindness. I remember the Prophet (PBUH): when I'm down, I think how he was the best of mankind, and also the most gentle, compassionate, sensitive, helpful, and humble. So I'm grateful that in these dark times, Allah has opened my heart. Still, I often feel scared. I worry about facing such people and the troubles they bring, now and in the future. It seems unfair, and I keep hearing that someone like me won't succeed, that I'm naive and foolish. People advise me to be more cunning and sharp, and I know they mean well, but it confuses me even more.