Most efficient way to soundproof a room? not just noise reduction?

Question

I really need to sound proof my room because people on the other room(s) are very noisy and I cant concentrate, I cant even sleep at night

what is the best way to sound proof a room that is originally a part of a bigger room, the wall/partition is just made of cheap plywood(3 sides of the wall, one side is concrete)

Answer 1

it wont be perfectly sound proof but egg cartons all over your walls could work. but thats just to keep teh sound out of YOUR room, im not sure of keeping it quiet. Mabey try talkin to the people you are upset with.

Either that or jsut buy earplugs or keep some dull music on that isnt very stimulating but enough to drownd out the sound and let you concentrait