What words are used to express the sincerity when texting your friends in festival period, such as the Spring Festival?
I received (and sent) several of these messages. I copied down some phrases to use later:

祝您事业兴旺！ = May your career be prosperous!
祝您福寿绵长！ = I wish you a long &amp; happy life!
祝您龙年大吉！ = I wish you a very lucky Dragon Year!
祝您万事如意！ = May everything be exactly as you wish it to be!

From what I can tell, Chinese often string many different phrases together with commas, so you might get something like:
祝您龙年快乐，事业兴旺，福寿绵长，万事如意！