Become in tune with your emotions. Know what it means to feel, sympathize and learn to recognize when and what others feel via intuition, body language, reading between the lines. It isn't a superpower, just an ignored ability :(
We have a post here about it, for more info (remember to remove the spaces when you copy/paste it into the address bar):
I told you how to develop empathy in the first part of my post. Are you looking for exercises to practice it, or?
When you are trying to connect with someone try to see the first color that comes to mind, what color they are giving off, and then try to read it. What does this color tell you about them? Is it an embarrassed, blushing pink or a friendly, loving pink. Is it angry red or passionate red?
Open Sacral Chakra . Wear Moonstone and Aventurine.
But to be an empath as for any abillity You need mental predispositions , specific profile. Anyone has talent for some ablities , some for PSI group , some for ESP , but to some we are just not inclined sa they can be contrary to our nature or to who we are. Emathy is actually one of the rarest gifts out there , just because it is hard to handle and dangerous in wrong hands ( empathic manipulation ).
Anyway go to Scribd , type "Spiritual empathy" , there is a document that explains how to know are You an empath, how to induce emmpathy , preform cleaning for empeaths, mediatations and chakra opening and much more.
i hope you are willing to accept everything is thrown at you, when you become a empath. once you open it up, you will not be able to stop anything that comes you way; good and bad.
most empaths are born with that gift. for someone to start in the middle of their lives, i have not heard of that yet.
i can tell you one thing. be careful around the ones you love too. cuz in my case, i didn't like seeing my ex leaving me 3 months prior to the split. psychic's are different, yet same in some ways. a majority for me is not receiving the good when it comes from being a physic.
i do wish you the best of luck of accomplishing you goal.