The title is a quote by Jeff Campbell. I've been doing a bit of decluttering. Here are some more ideas:
Do it now - don't procrastinate, a little at a time and you will be able to declutter.
Remember - you are making room in your life, for the life you want. Don't get stuck in the past.
If you aren't sure of something, hide it in a box for a few months. See how you feel then.
If your stuff doesn't fit your space, you have too much stuff.
Pick a small time frame that you will spend on decluttering every day. It doesn't have to be a long time, even 5 minutes can be enough to declutter one drawer.
Is it worth the space it is taking up?
Does it fit? Does it work? Is it helpful for this stage of your life?
Do you love it, use it or need it?