Basically you have to pick out what you need in your new home, in sensible amounts. Gather together sheets, towels, saucepans, tools, cushions etc and pick out the best until you have enough. So you have say, your nicest 3 or 4 sets of bedding to take with you. Imagine you are furnishing a holiday cottage or something.
What's left over, you have to say, only a stupid person would keep things they don't need that would also clutter up the new house. Then sell/donate in bundles. This approach helped me to let go of things that were still nice because regardless of that they were SURPLUS.
It's not wasteful because they will all go to someone else who is in the stage of life to make use of huge dinner service/salmon kettle/kids bedding etc. You had them, you used them, you pass them on.
Also if things just don't fit or suit new lifestyle, you can replace them. We have had several different dining tables over the years that suited different size/shape of rooms, but kept the same chairs. Likewise wardrobes have come and gone.