As someone who discovered having Asperger's Syndrome only in January 2014, I suppose that I masked or "passed" as NT for most of my life. As Wrong Planet owner Alex has described about himself, I grew up in a movie-theatre family of many generations. It wasn't unsual for me to see several movies a week while I was growing up for my first 25 years or so. By doing this, I believe that I learned NT characteristics and behaviors, and was able to mimic what I saw others do in the movies. Masking didn't always work, but it was rare for others to express concern ("you're being weird"). So, I would suggest watching good family movies (horror movies or exaggerated comedies might not work well at first). Watch the movies to learn from them. But, even this solution might not have good results for everyone. But, it might be worth the try.
Masking almost fulltime in my childhood resulted in some painful exhaustion, depression and anger, and my AS severity is usually mild. So masking might not work for others with increased severity. Even though I was and am very able to mask when I choose to do so, it is very exhausting because I am ignoring my initial intentions for every question, statement or choice, and choosing instead to mask. Sometimes, it is worth it because people I care about say that I seem friendlier and happier. I tell them that it takes a lot out of me to be that way. And, my recharge times are longer when I do so, or believe I am expected to do so.
In the end, I guess it is a good talent to perfect for those times when masking is desired (by me or others) or necessary. But, as has been written here, don't let it make you ignore who you are. If you are willing to mask sometimes for its benefits, your family and friends should return the favor and let you just be you sometimes, too. That is my opinion, anyway.