It is a kanji meaning fortune. It means that fortune comes when we bring sacrifice to God, and we can feel Oriental thought that emphasized respect for past ancestors.
If you express "appreciation" for the past as a sacrifice, you can say "good luck" to the present. I hope that I "wish" to thank you for your future. Because of this perpetuality of time, the past, present and future are all connected, so luck is not suddenly popping out at some point but steadily coming down. Only when we can feel its reality is different.
The new year is bright in 2018. Let 's hope and motivate for the upcoming year with reflection and appreciation for the time already passed. Happy new year!