Take an hour, any hour. Pick through stuff in your closet. Set aside three distinct piles, to wit:
1/ Sucks as fashion item and will always suck as fashion item
2/ Reminds you of some unpleasant memory (person or thing)
3/ Provisional and dead obvious keeper
Then get big non-see-through bag(s) and throw in contents of first and second piles. No need to sort these piles at this time.
How about that? You just save yourself $20 in book costs and didn't add to your clutter. Congratulations !
Next: Running for Your Life: Steady Does It