Happiness

My husband showed me this sentence he kept for many years in his diary:
‘If you don't enjoy what you have how could you be happy with more?’
I don’t know who wrote it, it was on the date of 27th Sep in a calendar, not sure which year, but it made a lot of sense to me.
Read it again. ‘If you don't enjoy what you have how could you be happy with more?’
But what exactly is happiness? Wikipedia definition to that is 'Happiness is a state of mind or feeling characterized by contentment, love, satisfaction, pleasure, or joy.'
 
We are all looking for something that will make us happy. People are walking about with the thought that if they got this car/income/sofa etc. they will be happy. And after a lot of hard work they get the car/income/sofa they wanted and guess what? They are still feeling the emptiness.
I am not saying one shouldn’t thrive for more, but I am stressing that a person should try and aim to live in the present and feel happy here and now. Not look to another date in the future when he will be mortgage free or with the chandelier his wife was dreaming about in the past decade.
If we think about what do we have at present that is totally ours? It is only ourselves. A person should love himself for who he is. Get to know himself and try to look at himself externally. Try to imagine what someone else would think about him.  And then when he feels proud, respected for his views and values, loved and looked up to, only then could he appreciate everything he has.  
That would be a state of happiness.