Is happiness related to your ability to acquire what you desire?

No....Not in my opinion happiness is basically a Skill.

Or a State of Mind that has no requirement beyond the ability to choose a particular perspective. 

Acquisition of Desires is Fulfillment or Achievement....Neither Guarantees Happiness.

Agreed.

@frankster nails it.  I wholeheartedly agree that happiness is a state of mind and I'll add...being.  

 

Human beings who use things and other people to make them happy hardly ever achieve happiness. 

 

You have to be the source of your happiness first and foremost.    Anybody else and/or anything else can only add to your happiness.  😎

Happiness is HIGHLY subjective and whether or not acquisition equates to happiness depends on EACH person.

Just because YOU don't derive happiness from within, doesn't mean the next person doesn't get their main source of happiness from external sources.

For some, it absolutely does.
And it may not necessarily be the material (or people) acquired that leads to happiness, but the SUCCESS of the actual acquisition itself.
Makes one feel like a real winner being able to set goals and achieve them.

I should say that acquisition isn't just about purchasing goods. For instance you can acquire a new skill.