I've gone through these extended 'sabbaticals' twice in 30+ years and continue to comee back to quilting.
A few things that have restarted me:
*joining a new guild
*finding a community/charity quilt/sewing group
*taking on a massive project (for me it was initiating the Military Barracks Quilt Project here 4 years ago that sent 128 quilts to 1 battalion in Afghanistan)
*having to pack up my sewing space and move to a new state/apartment/house
*needing a bedsize quilt for my own bed in a new, colder, location
*finding, without searching, the 'perfect' table for inserting my machine down into it and it was long enough for cutting and basting as well
Jan in VA