Steve Jobs told everyone to "love what you do" or words to that effect. Love what you do for a living. Love your lifestyle choices. Love your home; love a hobby; etc. etc.
Love and happiness should go together like peanut butter and jelly in my humble opinion. Find someone to love who makes you happy...at least as happy as you allow yourself to be. Ahhh...that can be a problem for some people I think.
I seem to fall in love with men who have a difficult time being happy. Perhaps they feel they don't deserve to be happy. They have a hard time feeling comfortable with happy. Just my observation but I think I'm correct about this. What about this trait makes them attractive to me, or am I attracted in spite of their lack of overall happiness? Unfortunately, it's a trait that becomes annoying. In hubby's case, I have always tried to brush his "unhappy" off; or tried to replace it with "happy." Sometimes I was successful.
Anyway, happiness for me comes and goes. I'm happy about certain things but not everything, and in my mind not enough things. But there are things that definitely make my heart sing. All of my grandchildren for instance. Summer is a big source of "happy" for me. The ocean. Holy cannoli, bring me to the ocean and everything changes for the better...my allergies disappear; I smile, a lot; life feels better in general. Good food. Being near my children. Travelling to fun and/or relaxing places. A good book or movie. Finishing a painting. Writing something I'm satisfied with. A man who loves me including and in spite of my numerous faults.