When I was a child, Christmas meant a big tree full of decorations and hypnotic blinking colored lights.  Christmas meant trying to stay awake to catch Babbo Natale, hoping for an overnight snowfall, watching Disney cartoons, and eating peanuts in front of the fireplace.
     As I grew, I came to understand the religious significance of Christmas; the virgin birth, and its implication of hope and renewal. Life's circumstances lead erased my belief in the little baby born in the manger, but I still feel that Christmastime is special and a bit magical.
     Today my mother asked me "why do you buy gifts want to celebrate Christmas when you have lost your faith?" I replied that I like thinking of Christmas as a time of second chances, renewal, purity, and hope for a better world. These ideas are independent of religion. They are universal.
     So now, in my pajamas in front of the fireplace with my peanuts, Christmas Carols, and Spumante, I would like to propose a toast: Universal Christmas. My wish for you is a happy and peaceful day spent with the people you love. 

     Merry Christmas World!

What's Christmas?

What's Christmas?
    When I was a child Christmas(For meaning clarity, it's better to start sentence with noun instead of pronoun) was a big tree, full of decorations and colored intermittent lights which almost hypnotized me. Christmas was to try (uselessly) to stay awake waiting for Babbo Natale, to hope it would (future with respect to past) snow during the night, to watch Disney cartoons and to eat peanuts in front of the fireplace.
    Growing up, it acquired for me a meaning most religious (My preference: It started representing religious significance): a special birth, an emblem of (symbolizing)renaissance and hope.
Facts of life leaded (led) me to not trust anymore (distrust) in the little baby in the manger...but I still feel that this period of the year is different from the other (than the rest of the year): special and a bit magic (magical). And today you, mom, ask to me (asked me): (,)'Why did you buy gifts and do you want to celebrate this day even if you have lost your faith?'. I like thinking to (of)Christmas as the day of the second chances, of the renaissance, of the pureness and of the hope for a better World.
This is independent from (of) the religion, it is universal.
So now, wearing my pajamas, eating peanuts and listening classic Christmas songs in front of my fireplace, with a glass of spumante in the hand, I drink for an Universal Christmas and I wish to you an (a) happy and peaceful day with the people who (not necessary) you love.
Merry Christmas World!

What's Christmas?

What's Christmas?
When I was a child it was a big tree, full of decorations and colored intermittent lights which almost hypnotized me. Christmas was to try (uselessly) to stay awake waiting for Babbo Natale, to hope it will snows during the night, to watch Disney cartoons and to eat peanuts in front of the fireplace.
Growing up, it acquired for me a meaning a most religious meaning for me; a special birth, an emblem of renaissance and hope.
Facts of life leaded me to not no longer trust (or believe) anymore in the little baby in the manger...but I still feel this period (or part) of the year differently from the others: special and a bit magical. And today you, mom, ask to me: 'Why did you buy gifts and do you want celebrate this day if you have lost your faith?'. I like thinking to of Christmas as the day of the second chances, of the renaissance, of the pureness and of the hope for a better World.
This is independent from the religion, it is universal.
So now, wearing my pajamas, eating peanuts and listening classic Christmas songs in front of my fireplace, with a glass of spumante in the hand, I drink for an Universal Christmas and I wish to you an happy and peaceful day with the people who you love.
Merry Christmas World!

I hope this will help you. Only use "an" before words beginning with 'h' when the initial sound in the word is a vowel sound (a,e,i,o,u) and the 'h' is silent. e.g. hour, honour. Your English is great! Buon natale!