One thing that I used to do a lot before I started feeling happier was living for someday. 

“Someday when I have more money, I’ll be happy.”
“Someday when I’m happy, I’ll take better care of myself.”

Stop living for someday. Start living for today because tomorrow isn't promised.

Founder of the /success channel. Search Marketing Director at Kraken Kratom. 

Living for someday can lead to a life of constant waiting and dissatisfaction. 
Embracing today is kinda peaceful.

That being said, I think it's okay to look forward to special moments, like I did as a kid when my parents bought me a new Christmas dress. 
I would eagerly await Christmas day to wear it.

 It's about finding a balance between living in the present and enjoying anticipation for the future.