This is a classic time of year for throwing stuff away.
Or at least it is a traditonal point on the calendar for trying to toss things out.
It can be a challenge, though, if you are prone to ask yourself over and over, "What if I need to refer to this someday?" That can lead to paralyzing dithering, of course.
In such cases, I try to tell myself I never would have been able to find it anyway.
What's your secret to being brutal when it comes to getting rid of stuff?