What do you think who stands between you and happiness?

I believe I am the responsible person of my happiness.So only myself stands between me and my happiness. As I said in the beginning we are in charge of our own happiness and grief,we are the ones who choose how we feel about most circumstances that we face in our lives. If I am not happy about certain thing or situation it's because I have chosen to have a negative outlook of that certain situation or thing in a negative way. So guys what do you think who stands between you and happiness?