Advice on de cluttering/organising/starting again?

hi guys~just would appreciate some advice/opinions,i have 3 bedrooms full of stuff,my own bedroom i have to struggle my way through clothes everyehere on the floor and my bed is piled with clothes i live in an old house so the wardwrobe is old and damp and wont fit all my stuff i am planning on moving so i have things in luggage just sitting there but i must sell the house first,i have a whole room filled with magazines i do make up and fashion and might need them for reference ,when i try to cut out what i need ofr them it seems overwhelming because theres so many,i have been down alot lately and kind of left everyhing go i live in the country and am miserable here and both my parents were ill and i have all there stuff like old pictures oraments ect furnature that i am afraid to part with,so everything is so cluttered,i kind of gave up on life nothing has been going the way i want it i dont have friends here i never go out,and i get too depressed sometimes trying to sort all this out so i have left everything pile up,i am in a rut and see that something needs to be done,i just dont know what to do anymore everything is in chaos,any opinions so much appreciated thank you