Close your eyes and throw it all out.
Or Set yourself a strict limit
Example:
newspaper collection: maximum 10
jars and containers collection maximum 20
it should help you get rid of the mountain of things you don't really need
Remember to de-clutter often. As Mari Kondo method suggests - whatever does not bring you "joy" to possess - doesn't have place in your home anymore. I am not a 100% Mari Kondo follower, I just got inspired from her to think more inquisitively if I really REALLY need this and it helped me.
A room that breathes feels better than a room full with boxes and what not.. :)
