Wow. What a situation to be in. I am saying this because I am the one of those persons you are talking about. I am exactly like you.

First of all, congrats. You are a leader. Always remember that people share their problems with leaders but never care to listen to their problems because they feel like those persons can't have problems. But they are also humans, they too have problems. People never understand. You don't bother.

Feel proud, you have a strong shoulder to offer someone to cry on, a strong heart to listen and absorb others problems. Try to search for some happiness there, and I am sure you'll find it.

I believe every single person has a person with whom they can be absolutely themselves. If you don't have such person in your life, try to search for one. I am sure you will find someone. Share everything with them, your every problem. Until then, talk to yourself. You are your best friend. Believe me you will feel better if you just talk to yourself. Tell yourself all your problems, solve it yourself. You are a leader my friend and leaders are the strongest individuals. Okay. I completely understand how you feel because i have been going through the same for my entire life. And what i will tell you now may sound harsh, but the truth will set you free. You need to stop having expectations. Just because those people that you helped once (or many times just been there for them) and thought that they are with you too like you are with them.. they were NEVER on your side to begin with. From my experience i realized that you cant fix anyone. Even though you have that instict or impulse to try to be there for people or help them.. you need to understand that you cant. It will just drain you, people will take you for granted, they will use you, suck up your energy.. until you have nothing left and wondering where the old you went/why are you not the same as you have been before. That is because you never properly thought of yourself. You need to step away from anyone (and even if it is family members) who just drags you down with their problems or doesnt wish you well or has your best interest in heart like you thought they did. I could go on for hours about this. And i know it is hard to think of yourself and what you want when all your life you tried to be everything for everyone, only for them to discard you once they dont need you anymore.