You can make nobody happy if they don't want to be happy too.
However, we are always drown to that kind of people, no matter what we do, no matter how hard we try, no matter how much energy we give, those people will never be lifted up by you. It is because they don't want to be their happy true self, they still believe in "I'm not good enough", "I can never get what I want" or "life is suffering". Their negativity of course can attract your attention to "help", but you can never make someone happy for long if they don't really want to change.
The basis of "help" is "I can't do it by myself, so I need your help", "I'm not happy, please make me happy", "I don't have love, please give me love". That really shows you "help" is never ending codependency. Someone who always asks people to give help or show them love actually is assuming they have no power in themselves.
Everyone is born to be a powerful creator of their own life experience. You are very powerful when you are in alignment with your true happy self.
You will never be really happy when you give up your power to create your own happy life and try to "help" or "love" other people to prove your worthiness.
You are born to be worthy, you are born to be happy and abundant. However you give up your power so easily because everyone around says "we should help other people".
If you have tuned in with the vibration of people who need help or love, you will not be really happy. When you are not really happy, there is nothing that you can give.
The real change starts from your intention to help yourself. You don't need a lover to be happy, you don't need a family to be happy, you don't need friends to be happy, you don't "need" anything to be happy. You only need "yourself" to be happy, when you start to say to yourself "I am good, I am worthy, I can be happy easily".
Of course it is nice to have lover, family, friends, money, etc; however you don't really "need" those, when you are your true happy self, everything you want will come to you to create joyful experiences that matches your vibration.