Grammy, I have a very similar situation.... my husband died while I was at WDW for the Oct.1, 1996 25th anniversary... he wasn't feeling well and begged another family member to go with me.... my stepmother's first cousin's wife who was on maternity leave. Widow at 32...
Honestly, I was at OKW and will never stay in that building again.... everytime I pass the building (have stayed at OKW many times since), I get a chill. That will never go away. I have sinced remarried and had kids and moved on.... with fabulous memories.
I first came back 3 months later with my mother and brother and 4yo niece.... seeing Disney thru a first timers eyes, especially a child, was great therapy.... remembering why Walt created this place to begin with helped me heal and find laughter again... I'd cry, laugh, cry, smile for the pix, cry, laugh, etc. Eventually the crying gets less and the laughter becomes more frequent until you become at ease with the pain.
You must replace the pain with new memories... celebrating your favorite places, your rituals... those things don't have to die... they are a part of you that goes on and should. He would want you to remember, laugh, celebrate your past while creating new and lasting memories.
I don't know your personal situation, but I agree with the others... don't sell unless you financially need to. If you love vacationing at Disney, then you should continue the traditions with someone new.... be it family, friend, etc. Be generous and give points to someone who can't afford to go and give them a gift... I did that as well... to a single mom... at the time free admission was part of the membership (prior to 2000) and it gave me such a warm feeling to know I was able to give that same experience we had shared with someone else who wouldn't have been otherwise able.... that was therapeutic.
I have since remarried, had kids and bought additional contracts 2 going on 3 times now. I'll always remember our memories, and every year it is easier... been 12 years now... and I can even laugh at what he would have found funny or would have loved to do... but now I share that with someone new and spread the magic in a different way.
Good luck and my prayers are with you.