If you find not buying beautiful craft/sewing/knitting materials hard, I suggest you'd look at some beautiful posts about using the stash here: http://thecraftsessions.com/blog/?category=Stash+...
Felicia's writing is lovely and it helps to look at what you already have with fresh eyes.
Having gone through quite a few years of no spending in the past I can say it is totally doable and I wish you good luck!