This is very hard for me to do as well. When we first come home, I look forward toward working and getting going but after a few days I question why I'm doing this and why we just can't be there all the time. Here are some things I do:
.Reserve the next trip before I leave there! This is important because knowing I'm going back helps get me going each day.
.Plan for the next trip. Yes, I never put away my luggage. Certain things I have bought just for WDW and stay in the luggage. I re-look and think about whether I really need all these things to make the suitcase lighter.
.Read the DIS boards - this helps alot!!! It makes you realize that there are millions of people like us! Also, by, staying on top of what's happening down there it helps make you feel good and like your only a few days away at times.
.Start a hobby (like I did) collecting beautiful pictures of WDW that people post. I have probably got over 5,000 by now.
.Projects: start them around the house to make the time go by faster. Between family, work and projects, we've just eaten up 8 months since our last trip quickly! For example, I painted the whole house by hand last year and it took about 2 months after work and on weekends!
hope that helps. If not, I'm sure others will have some tips!
Good Luck!

