I shook the Watchtower's armageddon crap by reading Matthew 24:36-51.
It also helped me realize that the FDS is just a parable contrasting a faithful servan of God with an evils servant of God.
The Governing Body won the evil servant category over 1000 other entrants.
Holidays and birthdays were no problem when I read Genesis 40:20-21 and realized the Watchtower concentrated on the negative outcome instead of the positive.
What helped me most was throwing out of my mind everything the Watchtower teaches and reading the bible starting with Romans, Ephesians and Galatians and then the gospels beginning with Matthew.
It still took a while to shake the demon inspired Watchtower's influence, so don't give up.