A lot (read: 99 per cent) of the people believe that you can be happy by making other people happy. No doubts why 99 per cent of the population is fundamentally unhappy.
Our happiness quotients are skewed by what all has been taught to us by our teachers and parents and society, even though they were well intentioned, what they taught you was keeping them unhappy for decades.
As corny and as simple it sounds, you need to measure happiness from the inside out. How can you give anything to anyone if you yourself do not have it?
If you are empty from within, that is what you are going to radiate.
If you are indecisive, that is what you will teach others to be.
If you hate your job and you are doing nothing to do that which you love, you are going to shout that very message to the society.
If you allow the abuses of someone to ruin your life, you are unconsciously condoning their incorrect behavior.
You teach people how to treat you. One of the first things of all these you can do, is to set your happiness equation right by filling your cup with overflowing happiness. Ever imagined, how would that look like?